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F I R S T 



P EINO 




NEW SYSTEM OF PHILOSOPHY. 



BV 

HERBERT SPENCER, 



AUTHOR OF 



mjjKTKvnoNe of ttsiykrsal progress, "essays, moral, political and ^stuktk^ 

"rRLNCIPLKS OF PSYCHOLOGY," "PRINCIPLES OF EIOLOGY/' " SOCIAL 8TATI06," 

" education," etc., kxo. 



NEW YORK: 
D. APPLE TON AND COMPANY, 

5 4 9 & 5 5 1 BROADWAY. 
1879. 






"? 






#• 



i 



J \ ' 



Entered, according to Act of Congress, In the year 1804, 

By D. APPLETON & CO., 

In th« Clerk's Office of the District Court of the United Statee for Uic 

Southern District of New York. 




PEEFACE 

HE AMERICAN EDITION. 




The present volume is the first of a series designed to un 
fold the principles of a new philosophy. It is divided into two 
parts : the aim of the first being to determine the true sphere 
of all rational investigation, and of the second, to elucidate 
those fundamental and universal principles which science has 
established within that sphere, and which are to constitute the 
basis of the system. The scheme of truth developed in these 
First Principles is complete in itself, and has its independent 
value ; but it is designed by the author to serve for guidance 
and verification in the construction of the succeeding and larger 
portions of his philosophic plan. 

Having presented in his introductory volume so much of 
the general principles of Physics as is essential to the develop- 
ment of his method, Mr. Spencer enters upon the subject of 
Organic nature. The second work of the series is to be the 
Principles of Biology — a systematic statement of the facts and 
laws which constitute the Science of Life. It is not to be an 
encyclopedic and exhaustive treatise upon this vast subject, 
but such a compendious presentation of its data and general 
principles as shall interpret the method of nature, afford a 
clear understanding of the questions involved, and prepare foi 
further inquiries. This work is now published in quarterly 
numbers, of from 80 to 96 pages. Four of these parts have 
already appeared, and some idea of the course and character 



VI PEEFACE. 

of the discussion may be formed by observing the titles to the 
chapters, which are as follows : 

Part First : I. Organic Matter ; II. The Actions of Forces 
on Organic Matter ; III. The Reactions of Organic Matter on 
Forces ; IV. Proximate Definition of Life ; V. The Correspond- 
ence between Life and its Circumstances; VI. The Degree 
of Life varies with the Degree of Correspondence; VII. 
Scope of Biology. Part Second : I. Growth ; II. Develop- 
ment ; III. Function ; IV. Waste and Repair ; V. Adaptation ; 
VI. Individuality; VII. Genesis; VIII. Heredity; IX. Varia- 
tion ; X. Genesis, Heredity, and Variation ; XI. Classification ; 
XII. Distribution. 

The Principles of Biology will be followed by the Princi- 
ples of Psychology ; that is, Mr. Spencer will pass from the 
consideration of Life to the study of Mind. This subject will 
be regarded in the light of the great truths of Biology pre- 
viously established ; the connections of life and mind will be 
traced ; the evolution of the intellectual faculties in their due 
succession, and in correspondence with the conditions of the 
environment, will be unfolded, and the whole subject of mind 
will be treated, not by the narrow metaphysical methods, but 
in its broadest aspect, as a phase of nature's order which can 
only be comprehended in the light of her universal plan. 

The fourth work of the series is Sociology, or the science 
of human relations. As a multitude is but an assemblage of 
units, and as the characteristics of a multitude result from the 
properties of its units, so social phenomena are consequences 
of the natures of individual men. Biology and Psychology 
are the two great keys to the knowledge of human nature ; 
and hence from these Mr. Spencer naturally passes to the sub- 
ject of Social Science. The growth of , society, the conditions 
of its intellectual and moral progress, the development of its 
various activities and organizations, will be here described, and 
a statement made of those principles which are essential to 
the successful regulation of social affairs. 

Lastly, in Part Fifth, Mr. Spencer proposes to consider the 
Principles of Morality. The truths furnished by Biology, Psy- 
chology, and Sociology will be here brought to bear, to deter- 



PREFACE. Vli 

mine correct rules of human action, the principles of private 
and public justice, and to form a true theory of right living. 

The reader will obtain a more just idea of the extent and pro- 
portions of Mr. Spencer's philosophic plan, by consulting his 
prospectus at the close of the volume. It will be seen to 
embrace a wide range of topics, but in the present work, and 
in his profound and original volumes on the "Principles of 
Psychology " and " Social Statics," as also throughout his 
numerous Essays and Discussions, we discover that he has 
already traversed almost the entire field, while to elaborate the 
whole into one connected and organized philosophical scheme, 
is a work well suited to his bold and comprehensive genius. 
With a metaphysical acuteness equalled only by his immense 
grasp of the results of physical science — alike remarkable 
for his profound analysis, constructive ability, and power of 
lucid and forcible statement, Mr. Spencer has rare endow- 
ments for the task he has undertaken, and can hardly fail to 
embody in his system the largest scientific and philosophical 
tendencies of the age. 

As the present volume is a working out of universal prin- 
ciples to be subsequently applied, it is probably of a more ab- 
stract character than will be the subsequent works of the 
series. The discussions strike down to the profoundest basis 
of human thought, and involve the deepest questions upon 
which the intellect of man has entered. Those unaccustomed 
to close metaphysical reasoning, may therefore find parts of 
the argument not easy to follow, although it is here pre- 
sented with a distinctness and a vigor to be found perhaps in no 
other author. Still, the chief portions of the book may be read 
by all with ease and pleasure, while no one can fail to be re- 
paid for the persistent effort that may be required to master 
the entire argument. All who have sufficient earnestness 
of nature to take interest in those transcendent questions 
which are now occupying the most advanced minds of the age, 
will find them here considered with unsurpassed clearness, 
originality, and power. 

The invigorating influence of philosophical studies upon 
the mind, and their consequent educational value, have been 



V1J1 PREFACE. 



bag recognized. In this point of view the system here pre 
sented has high claims upon the young men of our country - 
embodying as it does the latest and largest results of positive 
science ; organizing its facts and principles upon a natural meth- 
od, which places them most perfectly in command of memory • 
and converging all its lines of inquiry to the end of a high prac- 
tical beneficence,— the unfolding of those laws of nature and 
human nature which determine personal welfare and the social 
polity. Earnest and reverent in temper, cautious in statement, 
severely logical and yet presenting his views in a transparent 
and attractive style which combines the precision of science 
with many of the graces of lighter composition, it is believed 
that the thorough study of Spencer's philosophical scheme would 
combine, in an unrivalled degree, those prime requisites of the 
highest education, a knowledge of the truths which it is most 
important for man to know, and that salutary discipline of the 
mental faculties which results from their systematic acquisition. 
We say the young men of our country, for if we are not 
mistaken, it is here that Mr. Spencer is to find his largest 
and fittest audience. There is something in the bold hand- 
ling of his questions, in his earnest and fearless appeal to first 
principles, and in the practical availability of his conclusions 
which is eminently suited to the genius of our people. It has 
been so in a marked sense with his work on Education, and there 
is no reason why it should not be so in an equal degree with his 
other writings. They betray a profound sympathy with the 
best spirit of our institutions, and that noble aspiration for the 
welfare and improvement of society which can hardly fail to 
sommend them to the more liberal and enlightened portions 
of the American public. 



PREFACE TO THE SECOND EDITION. 



When the First Edition of this work was published, I sup- 
posed that the general theory set forth in its Second Part, 
was presented in something like a finished form ; but sub- 
sequent thought led me to further developments of much 
importance, and disclosed the fact that the component 
parts of the theory had been wrongly put together. 
Even in the absence of a more special reason, I had decided 
that, on the completion of the Principles of Biology , it would 
be proper to suspend for a few months the series I am 
issuing, that I might make the required re-organization. 
And when the time had arrived, there had arisen a more 
special reason, which forbade hesitation. Translations into 
the French and Russian languages were about to be made 
— had, in fact, been commenced ; and had I deferred the 
re-organization the work would have been reproduced with 
all its original imperfections. This will be a sufficient 
explanation to those who have complained of the delay in 
the issue of the Princijrfes of Psychology. 

The First Part remains almost untouched: two verbal 
alterations only, on pp. 43 and 99, having been made to 
prevent misconceptions. Part II., however, is wholly 
transformed; Its first chapter, on "Laws in General/'' is 
omitted, with a view to the inclusion of it in one of the 
latter volumes of the series. Two minor chapters disappear. 
Most of the rest are transposed, in groups or singly. 
And there are nine new chapters embodying the further 
developments, and serving to combine the pre-existing 
chapters into a changed whole. The following scheme in 



X TKEFACE TO THE SECOND EDITION. 

which the new chapters are marked by italics, will give an 
idea of the transformation : — 



First Edition. 

L;; t .73 in - General. 

The Law of Evolution. 

The Law of Evolution (continued). 

Tlre- Ca,uac3 of Evolution. 

Space, Time, Matter, Motion, and 

Force. 
The Indestructibility of Matter. 
The Continuity of Motion. 
The Persistence of Force. 



The Correlation and Equivalence 

of Forces. 
The Direction of Motion. 
The Rhythm of Motion. 



The- Conditions essential— ie E vo- 
lution. 



The Instability of the Homo- 
geneous. 
The Multiplication of Effects. 
Differentiation and Integration. 
Equilibration. 

Summary and Conclusion. 



Second Edition. 

Philosophij Defined. 
The Data of Philosojrfiy. 



Space, Time, Matter, Motion, 
and Force. 

The Indestructibility of Matter 

The Continuity of Motion. 

The Persistence of Force. 

The Persistence of Relation* 
among Forces. 

The Transformation and Equi- 
valence of Forces. 

The Direction of Motion. 

The Rhythm of Motion. 

Recapitulation, Criticism, and 
Recommencement 

Evolution and Dissolution, 

Simple and Compound Evolution 

TheLawofEvolution.v t» m „ 
j x^e-ar- 

The Law of Evolution 1 ranged 
(continued). J witifad- 

The Law of Evolution J ditions. 
(continued). ) 

The Law of Evolution (co/t- 
eluded). 

Tlie Interpretation of Evolution 

The Instability of the Homo- 
geneous. 

The Multiplication of Effects. 

Segregation. 

Equilibration. 

Dissolution. 

Summary and Conclusion (Re- 
written). 



Of course throughout this re-organized Second Part 
the numbers of the sections have been changed 



PREFACE TO THE SECOND EDITION, 



XI 



and hence those who possess the Principles of Biology, in 
which many references are made to passages in First Prin- 
ciples, would be inconvenienced by the want of corre- 
spondence between the numbers of the sections in the ori- 
ginal edition and in the new edition,, were they without any 
means of identifying the sections as now numbered. 
The annexed list, showing which section answers to which 
in the two editions, will meet the requirement : — 



First 
Edit 

§13 
41 


Second 
Edit, 

§119 
117 


First 
Edit. 


Second 
Edit. 

f"107 

108 


f First 
Edit. 

*£ 

to 


Second 

Edit. 

§58 
59 


First 

Edit 

§92 
93 


Second 
Edit. 

§81 
82 


First Second 
Edit. Edit 

§121 §161 
122 162 


45 118 




109 


74 


60 


94 


83 


123 


163 


46 120 




110 


75 


61 


95 


84 


124 


164 


47 121 


§56, 


111 


76 


62 


96 


85 


125 


165 


48 122 




112 


77 


66 


97 


86 


126 


166 


49 123 




113 


78 


67 


98 


87 


127 


167 


50 124 




114 


79 


68 


99 


88 


128 


168 


51 125 




115 


80 


69 


109 


149 


129 


169 


52 126 


61 


46 


81 


70 


110 


150 


130 


170 


53 128 


62 


47 


82 


71 


111 


151 


131 


171 


54 129 


63 


48 


83 


72 


112 


152 


132 


172 




fl30 


61 


49 


84 


73 


113 


153 


133 


173 




131 


65 


50 


85 


74 


114 


154 


134 


174 




132 


66 


52 


86 


75 


115 


155 


135 


175 


„ w 


133 


67 


53 


87 


76 


116 


156 


136 


176 


00 < 


134 


68 


54 


88 


77 


117 


157 


-,o 7 T177 

lo7 il83 




135 


69 


55 


89 


78 


118 


158 




136 


70 


56 


90 


79 


119 


159 


141 


193 




137 


71 


57 


91 


80 


120 


160 


145 


191 



The original stereotype plates have been used wherever 
it was possible; and hence the exact correspondence be- 
tween the two editions in many places, even where adjacent 
pages are altered. 



London, November, 1867 



PREFACE. 



Tnis volume is the iirsu of a aeries described in a prospectus 
originally distributed in March, 1860. Of that prospectus, 
the annexed is a reprint. 

A SYSTEM OF PHILOSOPHY. 

Mr. Herbert Spencer proposes to issue in periodical parts a 
connected series of works which he has for several years been 
preparing. Some conception of the general aim and scope of 
this series may be gathered from the following Programme. 

FIEST PKIXCIPLES. 

Part I. TnE Unknowable. — Carrying a step further the doctrine 
put into shape by Hamilton and Mansel ; pointing out the various direc- 
tions in which Science leads to the same conclusions ; and showing 
that in this united belief in an Absolute that transcends not only human 
knowledge but human conception, lies the only possible reconciliation 
of Science and Religion. 

Part II. Laws of the Kxowable. — A statement of the ultimate 
principles discernible throughout all manifestations of the Absolute — 
those highest generalizations now being disclosed by Science which are 
severally true not of one class of phenomena but of all classes of pheno- 
mena ; and which are thus the keys to all classes of phenomena.* 

* One of these generalizations is that currently known as " the Conservation 01 
Force ; " a second may be gathered from a published essay on u Progress : its Law 
and Cause ; " a third is indicated in a paper on " Transcendental Fhysiology ; ' 
and there are several others. 



XIV r RE FACE. 

[i« loyical order should here come the dijudication of these First Pi h.rr. 
pics to Inorganic Nature. But this great division it is proposed to pass 
over : partly because, even without it, the scheme is too extensive ; and 
partly because the interpretation of Organic Nature after the proposed 
method, is of more immediate importance. The second work of the seriet 
will therefore be — ] 



THE PEINCIPLES OF BIOLOGY. 
Vol. I. 

Part I. The Data of Biology. — Including those general truths of 
Physics and Chemistry with which rational Biology must set out. 

II. The Inductions of Biology. — A statement of the leading gener- 
alizations which Naturalists, Physiologists, and Comparative Anatomista, 
have established. 

III. The Evolution of Life. — Concerning the speculation com- 
monly known as " The Development Hypothesis " — its a priori and \ 
posteriori evidences. 

Yol. II. 

IV. Morphological Development. — Pointing out the relations that 
are everywhere traceable between organic forms and the average of the 
various forces to which they are subject; and seeking in the cumulative 
effects of such forces a theory of the forms. 

V. Physiological Development. — The progressive differentiation of 
functions similarly traced ; and similarly interpreted as consequent upon 
the exposure of different parts of organisms to different sets of conditions. 

VI. The Laws of Multiplication.— Generalizations respecting the 
rates of reproduction of the various classes of plants and animals ; fol- 
lowed by an attempt to show the dependence of these variations upon 
certain necessary causes.* 

* The ideas to be developed in the second volume of the Principles of Biology 
the •writer has already briefly expressed in sundry Review- Articles. Part IV. 
will work out a doctrine suggested in a paper on " The Laws of Organic Form," 
published in the Medico- Chirurgical Review for January, 1859. The germ of Part 
V. is contained in the essay on " Transcendental Physiology : " See Essays, pp. 
280-90. And in Part VI. will be unfolded certain views crudely expressed in a 
" Theory of Population," published in the Westminster Review for April 1852 



PREFACE. XV 

THE PEINCIPLES OP PSYCHOLOGY. 
Vol. I. 

Part I. The Data of Psychology. — Treating of the general con- 
nexions of Mind and Life and their relations to other modes of the 
Unknowable. 

II. The Inductions of Psychology. — A digest of such generaliza- 
tions respecting mental phenomena as have already been empirically 
established. 

III. General Synthesis. — A republication, with additional chapters, 
of the same part in the already-published Principles of Psychology. 

IV. Special Synthesis. — A republication, with extensive revisions 
and additions, of the same part, &c. &c. 

V. Physical Synthesis. — An attempt to show the manner in which 
the succession of states of consciousness conforms to a certain funda- 
mental law of nervous action that follows from the First Principles laid 
down at the outset. 

Vol. II. 

VI. Sfecial Analysis— As at present published, but further elabor 
ated by some additional chapters. 

VII. General Analysis. — As at present published, with several 
explanations and additions. 

VIII. Corollaries. — Consisting in part cf a number of derivative 
principles which form a necessary introduction to Sociology.* 

THE PEIXCIPLES OE SOCIOLOGY^. 
Yol. I. 

Part I. The Data of Sociology.— A statement of the several sets 
of factors entering into social phenomena — human ideas and feelings 
considered in their necessary order of evolution ; surrounding natural 
conditions; and those ever complicating conditions to which Society 
itself gives origin. 

II. The Inductions of Sociology.— General facts, structural and 
functional, as gathered from a survey of Societies and their changes : in 

* Respecting the several addition? to be made to the Principles of Psychology, 
it seems needful only to say that Part V. is the unwritten division named in the 
preface to that work— a division of which the germ is contained in a note on page 
514, and of which the scope has since been more definitely stated in a paper in 
the Medico- Chirurgical Review for Jan. 1859. 



X.V1 rREPAClB. 

other words, the empirical generalizations that are arrived at by com- 
paring different societies, and successive phases of the same society. 

III. Political Organization. — The evolution of governments, gene- 
ral and local, as determined by natural causes ; their several types and 
metamorphoses ; their increasing complexity and specialization ; and the 
progressive limitation of their functions. 



Vol. II. 

IV. Ecclesiastical Organization. — Tracing the differentiation of 
religious government from secular ; its successive complications and the 
multiplication of sects ; the growth and continued modification of re- 
ligious ideas,, as caused by advancing knowledge and changing moral 
character ; and the gradual reconciliation of these ideas with the truths 
of abstract science. 

V. Ceremonial Organization.— The natural history of that third 
kind of government which, having a common root with the others, and 
slowly becoming separate from and supplementary to them, serves to 
regulate the minor actions of life. 

VI. Industrial Organization. — The development of productive and 
distributive agencies, considered, like the foregoing, in its necessary 
causes : comprehending not only the progressive division of labour, and 
the increasing complexity of each industrial agency, but also the suc- 
cessive forms of industrial government as passing through like phases 
with political government. 

Vol. III. 

VII. Lingual Progress. — The evolution of Languages regarded aa 
a psychological process determined by social conditions. 

VI II. Intellectual Progress.— Treated from the same point of 
view : including the growth of classifications ; the evolution of science 
out of common knowledge ; the advance from qualitive to quantative 
prevision, from the indefinite to the definite, and from the concrete to 
(he abstract. 

IX. Esthetic Progress. — The Fine Arts similarly dealt with: 
tracing their gradual differentiation from primitive institutions and from 
each other; their increasing varieties of development; and their ad- 
vance in reality of expression and superiority of aim. 

X. Moral Progress. — Exhibiting the genesis of the slow emotional 
modifications which human nature undergoes in its adaptation to the 
social state. 



PREFACE. XV11 

XI. Tile Consensus.— Treating of the necessary interdependence of 
Htructures and of functions in each type of society, and in the successive 
phases of social development.* 

THE PRINCIPLES OF MOEALITY. 
Vol. I. 

Part I. The Data of Morality. — Generalizations furnished by 
Biology, Psychology and Sociology, which underlie a true theory 01 
right Living : in other words, the elements of that equilibrium between 
constitution and conditions of existence, which is at once the moral 
ideal and the limit towards which we are progressing. 

II. The Inductions of Morality. — Those empirically-established 
rules of human action which are registered as essential laws by all 
civilized nations : that is to say — the generalizations of expediency. 

III. Personal Morals. — The principles of private conduct — physical, 
intellectual, moral and religious — that follow from the conditions to 
complete individual life : or, what is the same thing — these modes of 
private action which must result from the eventual equilibration of in- 
ternal desires and external needs. 

Vol. II. 

IV. Justice. — The mutual limitations of men's actions necessitated 
by their co-existence as units of a society — limitations, the perfect 
observance of which constitutes that state of equilibrium forming the 
goal of political progress. 

V. Negative Beneficence. — Those secondary limitations, similarly 
necessitated, which, though less important and not cognizable by law, 
are yet requisite to prevent mutual destruction of happiness in various 
indirect ways : in other words — those minor self-restraints dictated by 
what may be called passive sympathy. 

* Of this treatise on Sociology a few small fragments may be found in already- 
published essays. Some of the ideas to be developed in Part II. are indicated in 
an article on " The Social Organism," contained in the last number of the West- 
minster Revieio ; those which Part V. will work out, may be gathered from the 
first half of a paper written some years since on "Manners and Fashion ;" of Part 
VIII. the germs are contained in an article on the " Genesis of Science ;" two 
papers on " The Origin and Function of Music" and. u The Philosophy of Style," 
contain some ideas to be embodied in Part IX. ; and from a criticism of Mr. Bain's 
work on <; The Emotions and the "Will," in the last number of the Medico-Chirur' 
gical Review, the central idea to be developed in Tart X. may be inferred. 



XV 111 PREFACE. 

VI. Positive Beneficence.— Comprehending all modes of conduct 
dictated by active sympathy, which imply pleasure in giving pleasure — 
modes of conduct that social adaptation has induced and must render 
ever more general ; and which, in becoming universal, must fill to the 
full the possible measure of human happiness.* 

In anticipation of the obvious criticism that the scheme here 
sketched out is too extensive, it may be remarked that an ex- 
haustive treatment of each topic is not intended ; but simply the 
establishment of principles, with such illustrations as are needed 
to make their bearings fully understood. It may also be poiuted 
out that, besides minor fragments, one large division {The Princi- 
ples of Psychology) is already, in great part, executed. And a 
further reply is, that impossible though it may prove to execute 
the whole, yet nothing can be said against an attempt to set forth 
the First Principles and to carry their applications as far as cir. 
cumstauces permit. 

The price per Number to be half-a-crown ; that is to say, the 
four Numbers yearly issued to be severally delivered, post free, 
to all annual subscribers of Ten Shillings. 

• Part IV. of the Principles of Morality will be co-extensive (though not iden- 
tical) with the first half of the writer's Social St.:tics. 



This Programme I have thought well to reprint for two 
reasons : — the one being that readers may, from time to 
time, he ahle to ascertain what topics are next to be dealt 
with ; the other being that an outline of the scheme may 
^cmain, in case it should never be completed. 

The successive instalments of which this volume consists, 
were issued to the subscribers at the following dates : — Part 
I # (pp. 1_80) in October, 1860 ; Part II. (pp. 81—176) in 
Januarv, 1861 ; Part III. (pp. 177—256) in April, 1861 ; 
Part IV. (pp. 257—334) in October, 1861 ; Part V. (pp. 
335—416) in March, 1862 ; and Part VI. (pp. 417—504) 
in June, 1862* 

London, June Mh } 13G2. 

* These dates and pagings of the divisions as originally issued, of conra© 
Jo not apply to the volume as it now stands, beyond page 123. 



CONTENTS. 



PAET I.— THE UNKNOWABLE. 



CHAP. 

I. RELIGION AND SCIENCE 

U. ULTIMATE RELIGIOUS IDEAS 

III. ULTIMATE SCIENTIFIC IDEAS 

IV. THE RELATIVITY OP ALL KNOWLEDGE 

V. TEE RECONCILIATION 



PAGB 

3 
25 
47 

08 
98 



PART II.— THE KNOWABLE. 

CHAP. 

I. PHILOSOPHY DEFINED ... 

II. THE DATA OF PHILOSOPHY... 

III. SPACE, TIME, MATTER^ MOTION; AND FORCE 

IV. THE INDESTRUCTIBILITY OF MATTER 

7. THE CONTINUITY OF MOTION 

VI. THE PERSISTENCE OF FORCE 

VII. THE PERSISTENCE OF RELATIONS AMONG FORCES .. 

VIII. THE TRANSFORMATION AND EQUIVALENCE OF FORCES 

IX. — THE DIRECTION OF MOTION 

X. THE RHYTHM OF MOTION ... 

XI. RECAPITULATION; CRITICISM; AND RECOMMENCEMENT 

XII. — EVOLUTION AND DISSOLUTION 



PAGE 

127 
135 

158 
172 
180 
185 
193 
197 
222 
250 
272 
278 



XX 



CONTENTS. 



XIII. SIMI>LE AND COMPOUND EVOLUTION 

XIV. THE" LAW OP EVOLUTION 

XV. THE LAW OP EVOLUTION CONTINUED 

XVI. — THE LAW OP EVOLUTION CONTINUED 

XVII. THE LAW OP EVOLUTION CONCLUDED 

XVIII. TnE INTERPRETATION OP EVOLUTION 

XIX. THE INSTABILITY OP THE HOMOGENEOUS 

XX. THE MULTIPLICATION OF EFFECTS 

XXI . — SEGREGATION 

XXII . EQUILIBRATION 

XXIII. DISSOLUTION 

XXIY. — SUMMARY AND CONCLUSION 



287 
307 
329 
3G1 
381 
397 
401 
431 
459 
483 
518 
538 



PART I 

THE UNKNOWABLE. 



CHAPTER I. 

RELIGION AND SCIENCE. 

§ 1. "We too often forget that not only is there " a soul of 
goodness in things evil," but very generally also, a soul of 
truth in things erroneous. While many admit the abstract 
probability that a falsity has usually a nucleus of reality, few 
bear this abstract probability in mind, when passing judg- 
ment on the opinions of others. A belief that is fin all} 
proved to be grossly at variance with fact, is cast aside with 
indignation or contempt ; and in the heat of antagonism 
scarcely any one inquires what there was in this belief which 
commended it to men's minds. Yet there must have been 
something. And there is reason to suspect that this some- 
thing was its correspondence with certain of their experiences : 
an extremely limited or vague correspondence perhaps ; but 
still, a correspondence. Even the absurdest report may in 
nearly every instance be traced to an actual occurrence ; and 
had there been no such cctual occurrence., this preposterous 
misrepresentation of it would never have existed. Though 
the distorted or magnified imagAlansmitted to us through 
the refracting medium of rumour ,9 utterly unlike the reality ; 
vet in the absence of the reality^here would have been no 
distorted or magnified image. And thus it is with human 
beliefs in general. Entirely wrong as they may appear, the 
implication is that they germinated out of actual experiences 
— originally contained, and perhaps still contain, some small 
amount of veritv. 



4: RELIGION AND SCIENCE. 

More especially may we safely assume this, in the case of 
beliefs that have long existed and are widely diffused ; and 
most of all so, in the case of beliefs that are perennial and 
nearly or quite universal. The presumption that any current 
opinion is not wholly false, gains in strength according to the 
number of its adherents. Admitting, as we must, that life is 
impossible unless through a certain agreement between in- 
ternal convictions and external circumstances ; admitting 
therefore that the probabilities are always in favour of the 
truth, or at least the partial truth, of a conviction ; we must 
admit that the convictions entertained by many minds in 
common are the most likely to have some foundation. The 
elimination of individual errors of thought, must give to 
the resulting judgment a certain additional value. It 
may indeed be urged that many widely-spread beliefs 
are received on authority ; that those entertaining them 
make no attempts at verification ; and hence it may be in- 
ferred that the multitude of adherents adds but little to the 
probability of a belief. But this is not true. For a belief 
which gains extensive reception without critical examination, 
is thereby proved to have a general congruity with the various 
other beliefs of those who receive it ; and in so far as these 
various other beliefs are based upon personal observation and 
judgment, they give an indirect warrant to one with which 
they harmonize. It may be that this warrant is of small 
value ; but still it is of some value. 

Could we reach definite views on this matter, they would 
be extremely useful to^^^It is important that we should, if 
possible, form. somcthin^Bke a general theory of current 
opinions; so that we maBieither over-estimate nor under- 
estimate their worth. Amving at correct judgments on dis- 
puted questions, much depends on the attitude of mind we 
preserve while listening \o, or taking part in, the controversy ; 
and for the preservation of a right attitude, it is needful that 
we should learn how true, and yet how untrue, are average 
human beliefs. On the one hand, we must keep free from 



RELIGION AND SCIENCE. 

that bias in favour of received ideas which expresses itself in 
such dogmas as " What every one says must be true," or 
" The voice of the people is the voice of God." On the other 
hand, the fact disclosed by a survey of the past, that majorities 
have usually been wrong,, must not blind us to the comple- 
mentary fact, that majorities have usually not been entirely 
wrong. And the avoidance of these extremes being a pre- 
requisite to catholic thinking, we shall do well to provide 
ourselves with a safe-guard against them, by making a valua- 
tion of opinions in the abstract. To this end we must con- 
template the kind of relation that ordinarily subsists between 
opinions and facts. Let us do so with one of those beliefs 
which under various forms has prevailed among all nations in 
all times. 

§ 2. The earliest traditions represent rulers as gods or 
demigods. By their subjects, primitive kings were regarded 
as superhuman in origin, and superhuman in power. They 
possessed divine titles ; received obeisances like those made 
before the altars of deities ; and were in some cases actually 
worshipped. If there needs proof that the divine and half- 
divine characters originally ascribed to monarchs were 
ascribed literally, we have it in the fact that there are still 
existing savage races, among whom it is held that the chiefs 
and their kindred are of celestial origin, or, as elsewhere, that 
only the chiefs have souls. And of course along with beliefs 
of this kind, there existed a belief in the unlimited power of 
the ruler over his subjects — an absolute possession of them, 
extending even to the taking of their lives at will : as even 
still in Fiji, where a victim stands unbound to be killed at the 
word of his chief; himself declaring, " whatever the king says 
must be done." 

In times and among races somewhat less barbarous, we find 

these beliefs a little modified. The monarch, instead of being 

literally thought god or demigod, is conceived to be a man 

having divine authoritv, with perhaps more or less of divine 

2 



6 RELIGION AND SCIENCE. 

nature. He retains however, as in the East to the present 
day, titles expressing his heavenly descent or relationships ; 
and is still saluted in forms and words as humble as those ad- 
dressed to the Deity. "While the lives and properties of his 
people, if not practically so completely at his mercy, are still 
in theory supposed to be his. 

Later in the progress of civilization, as during the middle 
ages in Europe, the current opinions respecting the relation- 
ship of rulers and ruled are further changed. For the theory 
of divine origin, there is substituted that of divine right. No 
longer god or demigod, or even god- descended, the king is 
now regarded as simply God's vice-gerent. The obeisances 
made to him are not so extreme in their humility ; and his 
sacred titles lose much of their meaning. Moreover his 
authority ceases to be unlimited. Subjects deny his right to 
dispose at will of their lives and properties ; and yield alle- 
giance only in the shape of obedience to his commands. 

With advancing political opinion has come still greater 
restriction of imperial power. Belief in the supernatural 
character of the ruler, long ago repudiated by ourselves for 
example, has left behind it nothing more than the popular 
tendency to ascribe unusual goodness, wisdom, and beauty to 
the monarch. Loyalty, which originally meant implicit sab- 
mission to the king's will, now means a merely nominal pro- 
fession of subordination, and the fulfilment of certain forms of 
respect. Our political practice, and our political theory, alike 
utterly reject those regal prerogatives which once passed un- 
questioned. By deposing some, and putting others in their 
places, we have not only denied the divine rights of certain 
men to rule ; but we have denied that they have any rights 
beyond those originating in the assent of the nation. Though 
our forms of speech and our state -documents still assert the 
subjection of the citizens to the ruler, our actual beliefs and 
our daily proceedings implicitly assert the contrary. We 
obey no laws save those of our own making. We have entirely 
divested the monarch of legislative power; and should im- 



RELIGION AND SCIENCE. 7 

mediately rebel against his or her exercise of such power, 
even in matters of the smallest concern. In brief, the abo- 
riginal doctrine is all but extinct among us. 

Nor has the rejection of primitive political beliefs, resulted 
only in transferring the authority of an autocrat to a repre- 
sentative body. The views entertained respecting govern- 
ments in general, of whatever form, are now widely different 
from those once entertained. "Whether popular or despotic, 
governments were in ancient times supposed to have unlimited 
authority over their subjects. Individuals existed for the 
benefit of the State ; not the State for the benefit of in- 
dividuals. In our days, however, not only has the national will 
been in many cases substituted for the will of the king ; but 
the exercise of this national will has been restricted to a much 
smaller sphere. In England, for instance, though there has 
been established no definite theory setting bounds to govern-' 
mental authority ; yet, in practice, sundry bounds have been 
set to it which are tacitly recognized by all. There is no 
organic law formally declaring that the legislature may not 
freely dispose of the citizens' lives, as early kings did when 
they sacrificed hecatombs of victims ; but were it possible for 
our legislature to attempt such a thing, its own destruction 
would be the consequence, rather than the destruction of 
citizens. How entirely we have established the personal 
liberties of the subject against the invasions of State-power, 
would be quickly demonstrated, were it proposed by Act of 
Parliament forcibly to take possession of the nation, or of any 
class, and turn its services to public ends ; as the services of 
the people were turned by primitive rulers. And should any 
statesman suggest a re-distribution of property such as was 
sometimes made in ancient democratic communities, he would 
be met by a thousand-tongued denial of imperial power over 
individual possessions. Not only in our day have these funda- 
mental claims of the citizen been thus made good against the 
State, but sundry minor claims likewise. Ages ago, laws 
regulating dress and mode of living fell into disuse; ana 



8 RELIGION AND SCIENCE, 

any attempt to revive them would prove the current opinion, 
to be, that such matters lie beyond the sphere of legal control. 
For some centuries we have been asserting in practice, and 
have now established in theory, the right of every man to 
choose his own religious beliefs, instead of receiving such 
beliefs on State-authority. Within the last few generations 
we have inaugurated complete liberty of speech, in spite of all 
legislative attempts to suppress or limit it. And still more 
recently we have claimed and finally obtained under a few 
exceptional restrictions, freedom to trade with whomsoever we 
please. Thus our political beliefs are widely different from 
ancient ones, not only as to the proper depositary of power to 
be exercised over a nation, but also as to the extent of that 
power. 

Not even here has the change ended. Besides the average 
opinions which we have just described as current among 
ourselves, there exists a less widely- diffused opinion going 
still further in the same direction. There are to be found 
men who contend that the sphere of government should be 
narrowed even more than it is in England. The modern 
doctrine that the State exists for the benefit of citizens, which 
has now in a great measure supplanted the ancient doctrine 
that the citizens exist for the benefit of the State, they would 
push to its logical results. They hold that the freedom of the 
individual, limited only by the like freedom of other individ- 
uals, is sacred ; and that the legislature cannot equitably put 
further restrictions upon it, either by forbidding any actions 
which the law of equal freedom permits, or taking away any 
property save that required to pay the cost of enforcing this 
law itself. They assert that the sole function of the State is 
the protection of persons against each other, and against a 
foreign foe. They urge that as, throughout civilization, the 
manifest tendency has been continually to extend the liberties 
of the subject, and restrict the functions of the State, there is 
reason to believe that the ultimate political condition must be 
one in which personal freedom is the greatest possible and 



RELIGION AND SCIENCE. 9 

governmental power the least possible : that, namely, in which 
the freedom of each has no limit but the like freedom of all ; 
while the sole governmental duty is the maintenance of this* 
limit. 

Here then in different times and places we find concerning 
the origin, authority, and fimctions of government, a great 
variety of opinions — opinions of which the leading genera 
above indicated subdivide into countless species. What now 
must be said about the truth or falsity of these opinions? 
Save among a few barbarous tribes the notion that a monarch 
is a god or demigod is regarded throughout the world as an 
absurdity almost passing the bounds of human credulity. 
In but few places does there survive a vague notion that the 
ruler possesses any supernatural attributes. Most civilized 
communities, which still admit the divine right of govern- 
ments, have long since repudiated the divine right of kings. 
Elsewhere the belief that there is anything sacred in legis- 
lative regulations is dying out : laws are coming to be con- 
sidered as conventional only. While the extreme school 
holds that governments have neither intrinsic author- 
ity, nor can have authority given to them by convention ; 
but can possess authority only as the administrators of those 
moral principles dcducible from the conditions essential to 
social life. Of these various beliefs, with their innumerable 
modifications, must we then say that some one alone is 
wholly right and all the rest wholly wrong ; or must we say 
that each of them contains truth more or less completely 
disguised by errors ? The latter alternative is the one which 
analysis will force upon us. Ridiculous as they may severally 
appear to those not educated under them, every one of these 
doctrines has for its vital element the recognition of an 
unquestionable fact. Directly or by implication, each of 
thern insists on a certain subordination of individual actions 
to social requirements. There are wide differences as to the 
power to which this subordination is due ; there are wide 
differences as to the motive for this subordination ; there are 



LO RELIGION AND SCIENCE. 

wide differences as to its extent ; but that there must be some 
subordination all are agreed. From the oldest and rudest 
idea of allegiance, down to the most advanced political theory 
of our own day, there is on this point complete unanimity. 
Though, between the savage who conceives his life and 
property to be at the absolute disposal of his chief, and the 
anarchist who denies the right of any government, autocratic 
or democratic, to trench upon his individual freedom, there 
seems at first sight an entire and irreconcileable antagonism ; 
} 7 et ultimate anal} r sis discloses in them this fundamental com- 
munity of opinion ; that there are limits which individual 
actions may not transgress — limits which the one regards as 
originating in the king's will, and which the other regards as 
dcducible from the equal claims of fellow-citizens. 

It may perhaps at first sight seem that we here reach a 
very unimportant conclusion ; namely, that a certain tacit 
assumption is equally implied in all these conflicting political 
creeds — an assumption which is indeed of self-evident 
validity. The question, however, is not the value or novelty 
of the particular truth in this case arrived at. My aim has 
been to exhibit the more general truth, which we are apt to 
overlook, that between the most opposite beliefs there is 
usually something in common, — something taken for granted 
by each ; and that this something, if not to be set down 
as an unquestionable verity, may yet be considered to 
have the highest degree of probability. A postulate which, 
like the one above instanced, is not consciously asserted but 
unconsciously involved ; and which is unconsciously involved 
not by one man or body of men, but by numerous bodies (.f 
men who diverge in countless ways and degrees in the rest of 
Iheir beliefs ; has a warrant far transcending any that can be 
usually shown. And when, as in this case, the postulate is 
abstract — is not based on some one concrete experience 
common to all mankind, but implies an induction from a 
great variety of experiences, we may say that it ranks next in 
certainty to the postulates of exact science. 



RELIGION AND SCIENCE. 12 

Do we not thus arrive at a generalization which may habit- 
ually guide us when seeking for the soul of truth in things 
erroneous ? While the foregoing illustration brings clearly 
home the fact, that in opinions seeming to be absolutely and 
supremely wrong something right is yet to be found ; it also 
indicates the method we should pursue in seeking the some- 
thing right. This method is to compare all opinions of the 
same genus; to set aside as more or less discrediting one 
another those various special and concrete elements in which 
such opinions disagree ; to observe what remains after the 
discordant constituents have been eliminated; and to find 
for this remaining constituent that abstract expression which 
holds true throughout its divergent modifications. 

§ 3. A candid acceptance of this general principle and an 
adoption of the course it indicates, will greatly aid us in deal- 
ing with those chronic antagonisms by which men are 
divided. Applying it not only to current ideas with which 
we are personally unconcerned, but also to our own ideas and 
those of our opponents, we shall be led to form far more 
correct judgments. "We shall be ever ready to suspect that 
the convictions we entertain are not wholly right, and that 
the adverse convictions are not wholly wrong. On the one 
hand we shall not, in common with the great mass of the 
unthinking, let our beliefs be determined by the mere accident 
of birth in a particular age on a particular part of the Earth's 
surface ; and, on the other hand, we shall be saved from that 
error of entire and contemptuous negation, which is fallen 
into by most who take up an attitude of independent criticism. 

Of all antagonisms of belief, the oldest, the widest, the most 
profound and the most important, is that between Religion 
and Science. It commenced when the recognition of the 
simplest uniformities in surrounding things, set a limit to 
the once universal superstition, It shows itself everywhere 
throughout the domain of human knowledge: affecting men's 
interpretations alike of the simplest mechanical accidents and 



12 RELIGION AN]) SCIENCE. 

of the most complicated events in the histories of nations. 
It has its roots deep down in the diverse habits of thought of 
different orders of minds. And the conflicting conceptions of 
nature and life which these diverse habits of thought severally 
generate, influence for good or ill the tone of feeling and tho 
daily conduct. 

An unceasing battle of opinion like this which has been 
carried on throughout all ages under the banners of Religion 
and Science, has of course generated an animosity fatal to a 
just estimate of either party by the other. On a larger scale, 
and more intensely than any other controversy, has it illus- 
trated that perennially significant fable concerning the knights 
who fought about the colour of a shield of which neither 
looked at more than one face. Each combatant seeing clearly 
his own aspect of the question, has charged his opponent 
with stupidity or dishonesty in not seeing the same aspect of 
it ; while each has wanted the candour to go over to his 
opponent's side and find out how it was that he saw every- 
thing so differently. 

Happily the times display an increasing catholicity of feel- 
ing, which we shall do well in carrying as far as our natures 
permit. In proportion as we love truth more and victory 
less, we shall become anxious to know what it is which leadb 
our opponents to think as they do. "We shall begin to suspect 
that the pertinacity of belief exhibited by them must result 
from a perception of something we have not perceived. And 
we shall aim to supplement the portion of truth we have 
found with the portion found by them. Making a more 
rational estimate of human authority, we shall avoid alike the 
extremes of undue submission and undue rebellion — shall not 
regard some men's judgments as wholly good and others as 
wholly bad ; but shall rather lean to the more defensible 
position that none are completely right and none are com- 
pletely wrong. 

Preserving, as far as may be, this impartial attitude, let us 
then contemplate the two sides of this great controversy 



RKLTGTON AND SCIENCE. 13 

Keeping guard against the bias of education and shutting out 
the whisperings of sectarian feeling, let us consider what are 
the a priori probabilities in favour of each party. 

§ 4. TThen duly realized, the general principle above 
illustrated must lead us to anticipate that the diverse forms 
of religious belief which have existed and which still exist, 
have all a basis in some ultimate fact. Judging by analogy 
the implication is, not that any one of them is altogether 
right ; but that in each there is something right more or loss 
disguised by other things wrong. It may be that the soul of 
truth contained in erroneous creeds is very unlike most, if not 
all, of its several embodiments ; and indeed, if, as we have good 
reason to expect, it is much more abstract than any of them, 
its unlikeness necessarily follows. But however different 
from its concrete expressions, some essential verity must be 
looked for. To suppose that these multiform conceptions 
should be one and all absolutely groundless, discredits too 
profoundly that average human intelligence from which all 
our individual intelligences are inherited. 

This most general reason we shall find enforced by other 
more special ones. To the presumption that a number of 
diverse beliefs of the same class have some common founda- 
tion in fact, must in this case be added a further presumption 
derived from the omnipresence of the beliefs ^Religious ideas 
of one kind or other are almost universal. Admitting that 
in many places there are tribes who have no theory of crea- 
tion, no word for a deity, no propitiatory acts, no idea of an- 
other life — admitting that only when a certain phase of intel- 
ligence is reached do the most rudimentary of such theories 
make their appearance; the implication is practically the 
sanie.-JGrant that among all races who have passed a 
certain stage of intellectual development there are found 
vague notions concerning the origin and hidden na- 
ture of surrounding tilings ; and there arises the infer- 
ence that such notions are necessary products of pro- 
gressing intelligence. Their endless variety serves but 



[4 KEL1GI0N AND SCIENCE. 

to strengthen this conclusion : showing as it does a more or 
less independent genesis — showing how, in different places 
and times, like conditions have led to similar trains of 
thought, ending in analogous results. That these countless 
different, and yet allied, phenomena presented by all religions 
are accidental or factitious, is an untenable supposition. A 
candid examination of the evidence quite negatives the doc- 
trine maintained by some, that creeds are priestly inventions. 
Even as a mere question of probabilities it cannot rationally 
be concluded that in every society, past and present, savage 
and civilized, certain members of the community have com- 
bined to delude the rest, in ways so analogous. To any who 
may allege that some primitive fiction was devised by some 
primitive priesthood, before yet mankind had diverged from 
a common centre, a reply is furnished by philology ; for 
philology proves the dispersion of mankind to have com 
menced before there existed a language sufficiently organized 
to express religious ideas. Moreover, were it otherwise tenable, 
the hypothesis of artificial origin fails to account for the facts. 
It does not explain why, under all changes of form, certain 
elements of religious belief remain constant. It does not 
show us how it happens that while adverse criticism has from 
age to age gone on destroying particular theological dogmas, 
it has not destroyed the fundamental" conception underlying 
these dogmas. It leaves us without any solution of the strik- 
ing circumstance that when, from the absurdities and cor- 
ruptions accumulated around them, national creeds have 
fallen into general discredit, ending in indifferentism or 
positive denial, there has always by and by arisen a re-asser- 
tion of them : if not the same in form, still the same in 
essence. Thus the universality of religious ideas, their in- 
dependent evolution among different primitive races, and 
their great vitality, unite in showing that -their source must 
be deep-seated instead of superficial. In other words, we 
are obliged to admit that if not supernaturally derived as 



RELIGION AXU SCIENCE. 15 

the majority contend, they must be derived out of human 
experiences, slowly accumulated and organized. 
/ Should it be asserted that religious ideas are products of 
the religious sentiment, which, to satisfy itself, prompts 
imaginations that it afterwards projects into the external 
world, and by and by mistakes for realities ; the problem is 
not solved, but only removed further back. Whether the 
wish is father to the thought, or whether sentiment and ideo 
have a common genesis, there equally arises the question — 
"Whence comes the sentiment ? That it is a constituent in 
man's nature is inrplied by the hypothesis ; and cannot in- 
deed be denied by these who prefer other hypotheses. And 
if the religious sentiment, displayed habitually by the majority 
of mankind, and occasionally aroused even in those seemingly 
devoid of it, must be classed among human emotions, w T e 
cannot rationally ignore it. We are bound to ask its origin 
and its function. Here is an attribute which, to say the least, 
has had an enormous influence — which has played a con- 
spicuous part throughout the entire past as far back as 
history records, and is at present the life of numerous insti- 
tutions, the stimulus to perpetual controversies, and the 
prompter of countless daily actions. Any Theory of Things 
which takes no account of this attribute, must, then, be ex- 
tremely defective. If with no other view, still as a question 
in philosophy, we are called on to say what this attribute 
means ; and we cannot decline the task without confessing 
our philosophy to be incompetent. 

Two suppositions only are open to us : the one that the 
feeling which responds to religious ideas resulted, along with 
all other human faculties, from an act of special creation ; the 
other that it, in common with the rest, arose by a process of 
evolution. If we adopt the first of these alternatives, uni- 
versally accepted by our ancestors and by the immense 
majority of our contemporaries, the matter is at once settled : 
man is directly endowed with the religious feeling by a 



16 RELIGION AND SCIENCE. 

creator; and to that creator it designedly responds. If we 
adopt the second alternative, then we are met by the questions 
— What are the circumstances to which the genesis of the re- 
ligious feeling is due ? and — "What is its office ? We are bound 
to entertain these questions ; and we are bound to find 
answers to them. Considering all faculties, as we must on 
this supposition, to result from accumulated modifications 
caused by the intercourse of the organism with its environ- 
ment, we are obliged to admit that there exist in the environ- 
ment certain phenomena or conditions which have determined 
the growth of the feeling in question ; and so are obliged to 
admit that it is as normal as any other faculty. Add to 
which that as, on the hypothesis of a development of lower 
forms into higher, the end towards which the progressive 
changes directly or indirectly tend, must be adaptation to 
the requirements of existence; we are also forced to infer 
that this feeling is in some way conducive to human welfare. 
Thus both alternatives contain the same ultimate implication. 
We must conclude that the religious sentiment is either di- 
rectly created, or is created by the slow action of natural 
causes ; and whichever of these conclusions we adopt, requires 
us to treat the religious sentiment with respect. 

One other consideration should not be overlooked — a con- 
sideration which students of Science more especially need to 
have pointed out. Occupied as such are with established truths, 
and accustomed to regard things not already known as things 
to be hereafter discovered, they are liable to forget that in- 
formation, however extensive it may become, can never satisfy 
inquiry. Positive knowledge does not, and never can, fill 
the whole region of possible thought. At the uttermost 
reach of discovery there arises, and must ever arise, the ques- 
tion — What lies beyond ? As it is impossible to think of a 
limit to space so as to exclude the idea of space lying outside 
that limit ; so we cannot conceive of any explanation profound 
enough to exclude the question — What is the explanation of 
that explanation ? Regarding Science as a gradually increas- 



RELIGION AND SCIENCE. 17 

ing sphere, we may say tliat every addition to its surface 
does but bring it into wider contact with surrounding nescience. 
There must ever remain therefore two antithetical modes of 
mental action. Throughout all future time, as now, the 
human mind may occupy itself, not only with ascertained 
phenomena and their relations, but also with that un- 
ascertained something which phenomena and their rela- 
tions iinply. Hence if knowledge cannot monopolize 
consciousness — if it must always continue possible for the 
mind to dwell upon that which transcends knowledge ; then 
there can never cease to be a place for something of the 
nature of Religion ; since Religion under all its forms is dis- 
tinguished from everything else in this, that its subject 
matter is that which passes the sphere of experience. 

Thus, however untenable may be any or all the existing 
religious creeds, however gross the absurdities associated with 
them, however irrational the arguments set forth in their de- 
fence, we must not ignore the verity which in all likelihood 
lies hidden within them. The general probability that widely- 
spread beliefs are not absolutely baseless, is in this case en- 
forced by a further probability due to the omnipresence of 
the beliefs. In the existence of a religious sentiment, what- 
ever be its origin, we have a second evidence of great signifi- 
cance. And as in that nescience which must ever remain the 
antithesis to science, there is a sphere for the exercise of this 
sentiment, we find a third general fact of like implication. 
TTe may be sure therefore that religions, though even none 
of them be actually true, are yet all adumbrations of a truth. 

§ 5. As, to the religious, it will seem absurd to set forth 
any justification for Religion ; so, to the scientific, will it seem 
absurd to defend Science. Yet to do the last is certainly as 
needful as to do the first. If there exists a class who, in 
contempt of its follies and disgust at its corruptions, have 
contracted towards Religion a repugnance which makes the n 
overlook the fundamental verity contained in it ; so, too, is 



ig RELIGION AND SCIENCE. 

there a class offended to sucIl a degree by the destructive 
criticisms men of science make on the religious tenets they 
regard as essential, that they have acquired a strong prejudice 
against Science in general. They are not prepared with any 
avowed reasons for their dislike. They have simply a re- 
membrance of the rude shakes which Science has given to 
many of their cherished convictions, and a suspicion that it 
may perhaps eventually uproot all they regard as sacred ; and 
hence it produces in them a certain inarticulate dread. 

What is Science ? To see the absurdity of the prejudice 
against it, we need only remark that Science is simply a 
higher development of common knowledge ; and that if 
Science is repudiated, all knowledge must be repudiated 
along with it. The extremest bigot will not suspect any 
harm in the observation that the sun rises earlier and sets 
later in the summer than in the winter ; but will rather 
consider such an observation as a useful aid in fulfilling the 
duties of life. "Well, Astronomy is an organized body of 
similar observations, made with greater nicety, extended to a 
larger number of objects, and so analyzed as to disclose the 
real arrangements of the heavens, and to dispel our false con- 
ceptions of them. That iron will rust in water, that wood 
will burn, that long kept viands become putrid, the most 
timid sectarian will teach without alarm, as things useful to 
be known. 13 ut these are chemical truths : Chemistry is a 
systematized collection of such facts, ascertained with pre- 
cision, and so classified and generalized as to enable us to say 
with certainty, concerning each simple or compound substance, 
what change will occur in it under given conditions. And 
thus is it with all the sciences. They severally - germinate 
out of the experiences of daily life ; insensibly as they grow 
they draw in remoter, more numerous, and more complex 
experiences ; and among these, they ascertain laws of de- 
pendence like those which make up our knowledge of the 
most familiar objects. Nowhere is it possible to draw a line 
and say — here Science begins. And as it is the function cf 



RELIGION AN" SCIEKC3. Vj 

common observation to serve for the guidance of conduct ; so, 
too, is the guidance of conduct the office of the most recondite 
and abstract inquiries of Science. Through the countless in- 
dustrial processes and the various modes of locomotion which 
it has given to us, Physics regulates more completely our social 
life than does his acquaintance with the properties of sur- 
rounding bodies regulate the life of the savage. Anatomy 
and Physiology, through their effects on the practice of medi- 
cine, and hygiene, modify our actions almost as much as does 
our acquaintance with the evils and benefits which common 
environing agencies ma}^ produce on our bodies. All Science 
is prevision ; and all prevision ultimately aids us in greater or 
less degree to achieve the good and avoid the bad. As 
certainly as the perception of an object tying in our path 
warns us against stumbling over it ; so certainly do those 
more complicated and subtle perceptions which constitute 
Science, warn us against stumbling over intervening obstacles 
in the pursuit of our distant ends. Thus being one in origin 
and function, the simplest forms of cognition and the most 
complex must be dealt with alike. We are bound in con- 
sistency to receive the widest knowledge which our faculties 
can reach, or to reject along with it that narrow knowledge 
possessed by all. There is no logical alternative between 
accepting our intelligence in its entirety, or repudiating even 
that lowest intelligence which we possess in common with 
brutes. » 

To ask the question which more immediately concerns our 
argument — whether Science is substantially true ? — is much 
J ike asking whether the sun gives light. And it is because 
they are conscious how undeniably valid are most of its proposi- 
tions, that the theological party regard Science with so much/ 
secret alarm. They know that during the two thousand 
years of its growth, some of its larger divisions — mathe- 
matics, physics, astronomy — have been subject to the ri- 
gorous criticism of successive generations ; and have notwith- 
standing become ever more firmly established. They know 



20 RELIGION AND SCIENCE. 

that, unlike many of their own doctrines, which were onco 
universally received but have age by age been more 
frequently called in question, the doctrines of Science, at first 
confined to a few scattered inquirers, have been slowly grow- 
ing into general acceptance, and are now in great part ad- 
mitted as beyond dispute. They know that men of science 
throughout the world subject each other's results to the most 
searching examination ; and that error is mercilessly exposed 
and rejected as soon as discovered. And, finally, they know 
that still more conclusive testimony is to be found in the 
daily verification of scientific predictions, and in the never- 
ceasing triumphs of those arts which Science guides. 

To regard with alienation that which has such high 
credentials is a folly. Though in the tone which many of 
the scientific adopt towards them, the defenders of Religion 
may find some excuse for this alienation ; yet the excuse is a 
very insufficient one. On the side of Science, as on their own 
side, they must admit that short- comings in the advocates do 
not tell essentially against that which is advocated. Science 
must be judged by itself : and so judged, only the most per- 
verted intellect can fail to see that it is worthy of all reverence. 
Be there or be there not any other revelation, we have a 
veritable revelation in Science — a continuous disclosure, 
through the intelligence with which we are endowed, of the 
established order of the Universe. This disclosure it is the 
duty of every one to verify as far as in him lies ; and having 
verified, to receive with all humilitv. 

§ 6. On both sides of this great controversy, then, truth 
must exist. An unbiassed consideration of its general aspects 
forces us to conclude that Religion, everywhere present as a 
weft running through the warp of human history, expresses 
some eternal fact ; while it is almost a truism to say of Science 
that it is an organised mass of facts, ever growing, and ever 
being more completely purified from errors. And if both 
have bases in the realitv of things, then between them there 



RELIGION ANE SCIENCE. 21 

must be a fundamental harmony. It is an incredible hypo- 
thesis that there are two orders of truth, in absolute and ever- 
lasting opposition. Only on some Manichean theory, which 
among ourselves no one dares openly avow however much his 
beliefs may be tainted by it, is such a supposition even con- 
ceivable. That Religion is divine and Science diabolical, is a 
proposition which, though implied in many a clerical declama- 
tion, not the most vehement fanatic can bring himself dis- 
tinctly to assert. And whoever does not assert this, must 
admit that under their seeming antagonism lies hidden an 
entire agreement. 

Each side, therefore, has to recognize the claims of the other 
as standing for truths that are not to be ignored. He who 
contemplates the Universe from the religious point of view, 
must learn to see that this which we call Science is one con- 
stituent of the great whole ; and as such ought to be regarded 
with a sentiment like that which the remainder excites. 
AVhile he who contemplates the universe from the scientific 
point of view, must learn to see that this which we call Reli- 
gion is similarly a constituent of the great whole ; and being 
such, must be treated as a subject of science with no nioro 
prejudice than any other reality. It behoves each party to 
strive to understand the other, with the conviction that the 
other has something worthy to be understood ; and with the 
conviction that when mutually recognized this something 
will be the basis of a complete reconciliation. 

How to find this something — how to reconcile them, thus 
becomes the problem which we should perseveringly try to 
solve. Xot to reconcile them in any makeshift way — not to 
find one of those compromises we hear from time to time 
proposed, which their proposers must secretly feel are arti- 
ficial and temporary ; but to arrive at the terms of a real am 
permanent peace between them. The thing we have to seek 
out, is that ultimate truth which both will avow with abso- 
lute sincerity — with not the remotest mental reservation. 
There shall be no concession— no vielding on either side of 



22 RELIGION AND SCIENCE. 

something tliat will by and by be reasserted ; but the common 
ground on which they meet shall be one which each will 
maintain for itself. "We have to discover some fundamental 
verity which Religion will assert, with all possible emphasis, 
in the absence of Science ; and which Science, with all possible 
emphasis, will assert in the absence of Religion — some funda- 
mental verity in the defence of which each will find the 
other its ally. 

Or, changing the point of view, our aim must be to co- 
ordinate the seemingly opposed convictions which Religion 
and Science embody. From the coalescence of antagonist 
ideas, each containing its portion of truth, there always arises 
a higher development. As in Geology when the igneous and 
aqueous hypotheses were united, a rapid advance took place ; 
as in Biology we are beginning to progress through the 
fusion of the doctrine of types with the doctrine of adapta- 
tions ; as in Psychology the arrested growth recommences 
now that the disciples of Kant and those of Locke have both 
their views recognized in the theory that organized ex- 
periences produce forms of thought ; as in Sociology, now that 
it is beginning to assume a positive character, we find a recog- 
nition of both the party of progress and the party of order, as 
each holding a truth which forms a needful complement to 
that held by the other ; so must it be on a grander scale with 
Religion and Science. Here too we must look for a conception 
which combines the conclusions of both ; and here too we may 
expect important results from their combination. To un- 
derstand how Science and Religion express opposite sides of 
the same fact — the one its near or visible side, and the other 
its remote or invisible side — this it is which we must attempt ; 
and to achieve this must profoundly modify our general 
Theory of Things. 

Already in the foregoing pages the method of seeking such 
a reconciliation has been vaguely foreshadowed. Before pre* 
ceeding farther, however, it will be well to treat the question 
of method more definitely. To find that truth in which 



■RELIGION AND SCIENCE. 23 

Religion and Science coalesce, we must know in what di- 
rection to look for it, and what kind of truth it is likely 
to be. 

§ 7. We have found a priori reason for believing that in 
all religions, even the rudest, there lies hidden a fundamental 
verity. "We have inferred that this fundamental verity is 
that element common to all religions, which remains after 
their discordant peculiarities have been mutually cancelled 
And we have further inferred that this element is almost 
certain to bo more abstract than any current religious 
doctrine. Now it is manifest that only in some highly 
abstract proposition, can Religion and Science find a common 
ground. Neither such dogmas as those of the trinitarian and 
unitarian, nor any such idea as that of propitiation, common 
though it may be to all religions, can serve as the desired 
basis of agreement ; for Science cannot recognize beliefs like 
these : they lie beyond its sphere. Hence we see not only 
that, judging by analogy, the essential truth contained in 
Religion is that most abstract element pervading all its forms ; 
but also that this most abstract element is the only one in 
which Religion is likely to agree with Science. 

Similarly if we begin at the other end, and inquire what 
scientific truth can unite Science and Religion. It is at once 
manifest that Religion can take no cognizance of special 
scientific doctrines ; any more than Science can take cogni- 
zance of special religious doctrines. The truth which Science 
asserts and Religion indorses cannot be one furnished by 
mathematics ; nor can it be a physical truth ; nor can it be a 
truth in chemistry : it cannot be a truth belonging to any 
particular science. No generalization of the phenomena of 
space, of time, of matter, or of force, can become a Religious 
conception. Such a conception, if it anywhere exists in 
Science, must be more general than any of these — must bo 
one underlying all of them. If there be a fact which 
Science recognizes in common with Religion, it must be that 



24: RELIGION AND SCIENCE. 

fact from which the several branches of Science diverge; as 
from their common root. 

Assuming then, that since these two great realities are 
constituents of the same mind, and respond to different aspects 
of the same Universe, there must be a fundamental harmony 
between them ; we see good reason to conclude that the most 
abstract truth contained in Religion and the most abstract 
truth contained in Science must be the one in which the two 
coalesce. The largest fact to be found within our mental 
range must be the one of which we are in search. Uniting 
these positive and negative poles of human thought, it must 
be the ultimate fact in our intelligence. 

§ 8. Before proceeding in the search for this common 
datum let me bespeak a little patience, The next three 
chapters, setting out from different points and converging to 
the same conclusion, will be comparatively unattractive. 
Students of philosophy will find in them much that is more 
or less familiar ; and to most of those who are unacquainted 
with the literature of modern metaphysics, they may prove 
somewhat difficult to follow. 

Our argument however cannot dispense with these chap- 
ters ; and the greatness of the question at issue justifies even 
a heavier tax on the reader's attention. The matter is one 
which concerns each and all of us more than any other matter 
whatever. Though it affects us little in a direct way, the view 
we arrive at must indirectly affect us in all our relations — must 
determine our conception of the Universe, of Life, of Human 
Nature — must influence our ideas of right and wrong, and so 
modify our conduct. To reach that point of view from which 
the seeming discordance of Religion and Science disappears, 
and the two merge into one, must cause a revolution of 
thought fruitful in beneficial consequences, and must surely 
be worth an effort. 

Here ending preliminaries, let us now address ourselves to 
this all -import ant inquiry. 



CHAPTER II. 



ULTIMATE RELIGIOUS IDEAS. 



§ 9. \Yhen, on the sea-shore, we note how the hulls of 
distant vessels are hidden below the horizon, and how, of still 
remoter vessels, only the uppermost sails are visible, we 
realize with tolerable clearness the slight curvature of that 
portion of the sea's surface which lies before us. But when 
we seek in imagination to follow out this curved surface as it 
actually exists, slowly bending round until all its meridians 
meet in a point eight thousand miles below our feet, we find 
ourselves utterly baffled. "We cannot conceive in its real 
form and magnitude even that small segment of our globe 
which extends a hundred miles on every side of us ; much 
less the globe as a whole. The piece of rock on which we 
stand can be mentally represented with something like com- 
pleteness : we find ourselves able to think of its top, its sides, 
and its under surface at the same time ; or so nearly at the 
same time that they seem all present in consciousness together ; 
and so we can form what we call a conception of the rock. 
But to do the like with the Earth we find impossible. If 
even to imagine the antipodes as at that distant place in 
space which it actually occupies, is beyond our power ; much 
more beyond our power must it be at the same time to 
imagine all other remote points on the Earth's surface as 
in their actual places. Yet we habitually speak as though 
we had an idea of the Earth — as though we could think of it 
in the same way that we think of minor objects. 



26 ULTIMATE RELIGIOUS IDEAS- 

What conception, then, do we form of it ? the reader may 
ask. That its name calls up in us some state of consciousness 
is unquestionable ; and if this state of consciousness is not a 
conception, properly so called, what is it ? The answer seems 
to be this : — We have learnt by indirect methods that the 
Earth is a sphere ; we have formed models approximately 
representing its shape and the distribution of its parts 
generally when the Earth is referred to, we either think of an 
indefinitely extended mass beneath our feet, or else, leaving 
out the actual Earth, we think of a body- like a terrestrial 
globe ; but when we seek to imagine the Earth as it really is, 
we join these two ideas as well as we can — such perception as 
our eyes give us of the Earth's surface we couple with the 
conception of a sphere. And thus we form of the Earth, not 
a conception properly so called, but only a symbolic concep 
tion. * 

A large proportion of our conceptions, including all those 
of much generality, are of this order. Great magnitudes, 
great durations, great numbers, are none of them actually 
conceived, but are all of them conceived more or less symbol- 
ically ; and so, too, are all those classes of objects of which we 
predicate some common fact. When mention is made of any 
individual man, a tolerably complete idea of him is formed. 
If the family he belongs to be spoken of, probably but a part 
of it will be represented in thought : under the necessity of 
attending to that which is said about the famity, we realize in 
imagination only its most important or familiar members, 
and pass over the rest with a nascent consciousness which we 
know could, if requisite, be made complete. Should some- 
thing be remarked of the class, say farmers, to which this 
family belongs, we neither enumerate in thought all the indi- 
viduals contained in the class, nor believe that we could do so 
if required ; but we are content with taking some few samples 

* Those who may have before met with this teim, will perceive that it ishert 
ased in quite a different ssnse. 



ULTIMATE RELIGIOUS IDEAS. 27 

of it, and remembering that these could be indefinitely mul- 
tiplied. Supposing the subject of which something is predi- 
cated be Englishmen, the answering state of consciousness is 
a still more inadequate representative of the reality. Yet 
more remote is the likeness of the thought to the thing, if 
reference be made to Europeans or to human beings. And 
when we come to propositions concerning the mammalia, or 
concerning the whole of the vertebrata, or concerning animals 
In general, or concerning all organic beings, the unlikeness of 
our conceptions to the objects named reaches its extreme. 
Throughout which series of instances we see, that as the 
number of objects grouped together in thought increases, the 
concept, formed of a few typical samples joined with the 
notion of multiplicity, becomes more and more a mere symbol; 
not only because it gradually ceases to represent the size of 
the group, but also because as the group grows more hetero- 
geneous, the typical samples thought of are less like the 
average objects which the group contains. 

This formation of symbolic conceptions, which inevitably 
arises as we pass from small and concrete objects to large and 
to discrete ones, is mostly a very useful, and indeed necessary, 
process. "When, instead of things whose attributes can be 
tolerably well united in a single state of consciousness, we 
have to deal with things whose, attributes are too vast or 
numerous to be so united, we must either drop in thought 
part of their attributes, or else not think of them at all — 
either form a more or less symbolic conception, or no concep- 
tion. "We must predicate nothing of objects too great or too 
multitudinous to be mentally represented ; or we must make 
our predications by the help of extremely inadequate repre- 
sentations of such objects — mere symbols of them. 

But while by this process alone we are enabled to form 
general propositions, and so to reach general conclusions, we are 
by this process perpetually led into danger, and very often 
into error. "We habitually mistake our symbolic conceptions 
for real ones ; and so are betrayed into countless false infer- 



23 ULTIMATE RELIGIOUS IDEAS. 

ences. Not only is it that in proportion as the concept we 
form of any thing or class of things, misrepresents the reality, ' 
we are apt to be wrong in any assertion we make respecting I 
the reality ; but it is that we are led to suppose we have truly 
conceived a great variety of things which we have conceived 
only in this fictitious way ; and further to confound with 
these certain things which cannot be conceived in any way. 
How almost unavoidably we fall into this error it will be 
needful here to observe. 

From objects readily representable in their totality, to those 
of which we cannot form even an approximate representation, 
there is an insensible transition. Between a pebble and the 
entire Earth a series of magnitudes might be introduced, each 
of which differed from the adjacent ones so slightly that it 
would be impossible to say at what point in the series our 
conceptions of them became inadequate. Similarly, there is 
a gradual progression from those groups of a few individuals 
which we can think of as groups with tolerable completeness, 
to those larger and larger groups of which we can form 
nothing like true ideas. Whence it is manifest that we pass 
from actual conceptions to symbolic ones by infinitesimal 
steps. Note next that we are led to deal with our symbolic 
conceptions as though they were actual ones, not only because 
we cannot clearly separate the two, but also because, in the 
great majority of cases, the first serve our purposes nearly or 
quite as well as the last — are simply the abbreviated signs 
we substitute for those more elaborate signs which are our 
equivalents for real objects. Those very imperfect represent- 
ations of ordinary things which we habitually make in thinking, 
we know can be developed into adequate ones if needful. Those 
concepts of larger magnitudes and more extensive classes 
which we cannot make adequate, we still find can be verified 
by some indirect process of measurement or enumeration. 
And even in the case of such an utterly inconceivable object 
as the Solar System, we yet, through the fulfilment of pre- 
dictions founded on our symbolic conception of it, gain the 



ULTIMATE RELIGIOUS IDEAS. 2\) 

conviction that this symbolic conception stands for an actual 
existence, and, in a sense, truly expresses certain of its 
constituent relations. Thus our symbolic conceptions being 
in the majority of cases capable of development into complete 
ones, and in most other cases serving as steps to conclusions 
which are proved valid by their correspondence with observa- 
tion, we acquire a confirmed habit of dealing with them as 
true conceptions — as real representations of actualities. 
Learning by long experience that they can, if needful, be 
verified, we are led habitually to accept them without verifi- 
cation. And thus we open the door to some which profess 
to stand for known things, but which really stand for things 
that cannot be known in any way. 

To sum up, we must say of conceptions in general, that 
they are complete only when the attributes of the object 
conceived are of such niuhber and kind that they can be 
represented in consciousness so nearly at the same time as to 
seem all present together ; that as the objects conceived 
become larger and more complex, some of the attributes first 
thought of fade from consciousness before the rest have been 
represented, and the conception thus becomes imperfect ; that 
when the size, complexity, or discreteness of the object 
conceived becomes very great, only a small portion of its 
attributes can be thought of at once, and the conception 
formed of it thus becomes so inadequate as to be a mere sym- 
bol ; that nevertheless such symbolic conceptions, which are 
indispensable in general thinking, are legitimate, provided 
that by some cumulative or indirect process of thought, or by 
the fulfilment of predictions based on them, we can assure 
ourselves that they stand for actualities ; but that when our 
symbolic conceptions are such that no cumulative or indirect 
processes of thought can enable us to ascertain that there are 
corresponding actualities, nor any predictions be made whose 
fulfilment can prove this, then they are altogether vicious and 
illusive, and in no way distinguishable from pure fictions. 




30 ULTIMATE RELIGIOUS IDEAS. 

§ 10. And now to consider the bearings of this general 
truth on our immediate topic — Ultimate Religious Ideas. 

To the mind as it develops in speculative power, the 
problem of the Universe suggests itself. What is it ? and 
whence comes it ? are questions that press for solution, when, 
from time to time, the imagination rises above daily triviali- 
ties. To fill the vacuum of thought, any theory that is 
proposed seems better than none. And in the absence of 
others, any theory that is proposed easily gains a footing and 
afterwards maintains its ground : partly from the readiness of 
mankind to accept proximate explanations ; partly from the 
authority which soon accumulates round such explanations 
when given. 

A critical examination, however, will prove not only that 
no current hypothesis is tenable, but also that no tenable 
hypothesis can be framed. 

§11. Respecting the origin of the Universe three verbally 
intelligible suppositions may be made. "We may assert that it 
is self-existent ; or that it is self-created ; or that it is created 
by an external agency. Which of these suppositions is most 
credible it is not needful here to inquire. The deeper ques- 
tion, into which this finally merges, is, whether any one of 
them is even conceivable in the true sense of the word. Let 
us successively test them. 

When we speak of a man as self-supporting, of an appa- 
ratus as self-acting, or of a tree as self- developed, our ex- 
pressions, however inexact, stand for things that can be 
realized in thought with tolerable completeness. Our con- 
ception of the self-development of a tree is doubtless 
sjinbolic. But though we cannot really represent in con- 
sciousness the entire series of complex changes through which 
the tree passes, yet we can thus represent the leading features 
of the series ; and general experience teaches us that by long 
continued observation we could gain the power to realize in 
thought a series of changes more fully representing the actual 



ULTIMATE RELIGIOUS IDEAS. 31 

series : that is, we know that our symbolic conception of self- 
development can be expanded into something like a real 
conception ; and that it expresses, however inaccurately, an 
actual process in nature. But when we speak of self- exist- 
ence, and, helped by the above analogies, form some vague sym- 
bolic conception of it, we delude ourselves in supposing that 
this symbolic conception is of the same order as the others. On 
joining the word self to the word existence, the force of 
association makes us believe we have a thought like that 
suggested by the compound word self-acting. An endeavour 
to expand this symbolic conception, however, will undeceive 
us. In the first place, it is clear that by self- existence 

we especially mean, an existence independent of any other — 
not produced by any other : the assertion of self-existence is 
simply an indirect denial of creation. In thus excluding the 
idea of any antecedent cause, we necessarily exclude the idea 
of a beginning ; for to admit the idea of a beginning — to 
admit that there was a time when the existence had not com- 
menced — is to admit that its commencement was determined 
by something, or was caused ; which is a contradiction. Self- 
existence, therefore, necessarily means existence without a 
beginning ; and to form a conception of self- existence is to 
form a conception of existence without a beginning. Now by 
no mental effort can we do this. To conceive existence 
through infinite past-time, implies the conception of infinite 
past- time, which is an impossibility. To this let us add, 

that even were self-existence conceivable, it would not in any 
sense be an explanation of the Universe. No one will say 
that the existence of an object at the present moment is 
made easier to understand by the discovery that it existed an 
hour ago, or a day ago, or a year ago ; and if its existence 
now is not made in the least degree more comprehensible by 
its existence during some previous finite period of time, then 
no accumulation of such finite periods, even could we extend 
them to an infinite period, woidd make it more comprehensible. 
Thus the Atheistic theory is not only absolutely unthinkable, 



32 ULTIMATE RELIGIOUS IDEAS. 

but, even if it were thinkable, would not be a solution. TIic 
assertion that the Universe is self-existent docs not really carry 
us a step beyond the cognition of its present existence ; and 
eo leaves us with a mere re-statement of the mystery. 

The hypothesis of self- creation, which practically amounts 
to what is called Pantheism, is similarly incapable of being 
represented in thought. Certain phenomena, such as the 
precipitation of invisible vapour into cloud, aid us in forming 
a symbolic conception of a self- evolved Universe ; and there 
are not wanting indications in the heavens, and on the earth, 
which help us to render this conception tolerably definite. 
But while the succession of phases through which the 
Universe has passed in reaching ' its present form, may 
perhaps be comprehended as in a sense self-determined ; yet 
the impossibility of expanding our symbolic conception of self- 
creation into a real conception, remains as complete as ever. 
Really to conceive self- creation, is to conceive potential 
existence passing into actual existence by some inherent 
necessity ; which we cannot do. We cannot form 

any idea of a potential existence of the universe, as dis- 
tinguished from its actual existence. If represented in 
111 ought at all, potential existence must be represented as 
something, that is as an actual existence ; to suppose that it 
can. be represented as nothing, involves two absurdities — 
that nothing is more than a negation, and can be positively 
represented in thought; and that one nothing is distinguished 
from all other nothings by its power to develope into some- 
thing. Nor is this all. We have no state of conscious- 
ness answering to the words — an inherent necessity by which 
potential existence became actual existence. To render them 
into thought, existence, having for an indefinite period re- 
mained in one form, must be conceived as passing without 
any external or additional impulse, into another form ; and 
this involves the idea of a change without a cause— a thing 
of which no idea is possible. Thus the terms of this hypo- 
thesis do not stand for real thoughts ; but merely suggest the 



ULTIMATE RELIGIOUS IDEAS. 83 

vaguest symbols incapable of any interpretation. More- 

over, even were it true that potential existence is conceivablo 
us a different tiling from actual existence ; and that the transi- 
tion from the one to the other can be mentally realized as a 
self-determined change ; we should still be no forwarder : the 
problem would simply be removed a step back. For whence 
the potential existence ? This would just as much require 
accounting for as actual existence ; and just the same difficul- 
ties would meet us. Respecting the origin of such a latent 
power, no other suppositions could be made than those above 
named — self- existence, self- creation, creation by external 
agency. The self-existence of a potential universe is no 
more conceivable than we have found the self- existence of the 
actual universe to be. The self-creation of such a potential 
universe would involve over again the difficulties here 
stated — would imply behind this potential universe a more 
remote potentiality ; and so on in an infinite series, leaving 
us at last no forwarder than at first. "\Yhile to assign as the 
source of this potential universe an external agency, would be 
to introduce the notion of a potential universe for no purpose 
whatever. 

There remains to be examined the commonly- received or 
theistic hypothesis — creation by external agency. Alike in 
the rudest creeds and in the cosmogony long current among 
ourselves, it is assumed that the genesis of the Heavens and 
the Earth is effected somewhat after the manner in which a 
workman shapes a piece of furniture. And this assumption 
is made not by theologians only, but by the immense majority 
of philosophers, past and present. Equally in the writings of 
Plato, and in those of not a few living men of science, we 
find it taken for granted that there is an analogy between the 
process of creation and the process of manufacture. Now 

in the first place, not only is this conception one that cannot 
by any cumulative process of thought, or the fulfilment of 
predictions based on it, be shown to answer to anything 
actual ; and not only is it that in the alsence of all evidence 



34 ULTIMATE RELIGI0U3 IDEAS. 

respecting the process of creation, we have no proof of corre- 
spondence even between this limited conception and some 
limited portion of the fact ; but it is that the conception 
is not even consistent with itself — cannot be realized in 
thought, when all its assumptions are granted. Though it is 
true that the proceedings of a human artificer may vaguely 
symbolize to us a method after which the Universe might be 
shaped, yet they do not help us to comprehend the real 
mystery ; namely, the origin . of the material of which the 
Universe consists. The artizan does not make the iron, wood, 
or stone, he uses ; but merely fashions and combines them. 
If we suppose suns, and planets, and satellites, and all they 
contain to have been similarly formed by a " Great Artificer,' ' 
we suppose merely that certain pre-existing elements were 
thus put into their present arrangement. But whence the 
pre-existing elements ? The comparison helps us not in the 
least to understand that ; and unless it helps us to understand 
that, it is worthless. The production of matter out of nothing 
is the real mystery, which neither this simile nor any other 
enables us to conceive ; and a simile which does not enable us 
to conceive this, may just as well be dispensed with. Still 

more manifest does the insufficiency of this theory of creation 
become, when we turn from material objects to that which 
contains them — when instead of matter we contemplate space. 
Did there exist nothing but an immeasurable void, explanation 
would be needed as much as now. There would still arise the 
question — how came it so ? If the theory of creation by ex- 
ternal agency were an adequate one, it would supply an 
answer ; and its answer would be— space was made in the same 
manner that matter was made. But the impossibility of con- 
ceiving this is so manifest, that no one dares to assert it. For 
if space was created, it must have been previously non-existent. 
The non-existence of space cannot, however, by any mental 
effort be imagined. It is one of the most familiar truths that 
the idea of space as surrounding us on all sides, is not for a mo- 
ment to be got rid of— not only are we compelled to think of 



ULTIMATE RELIGIOUS IDEAS. 35 

Bpace as now everywhere present, but we are unable to con- 
ceive its absence either in the past or the future. And if the 
non-existence of space is absolutely inconceivable, then, neces- 
sarily, its creation is absolutely inconceivable. Lastly, 
even supposing that the genesis of the Universe could really 
be represented in thought as the result of an external agency, 
the mystery would be as great as ever ; for there would still 
arise the question — how came there to be an external agency ? 
To account for this only the same three hypotheses are possible 
—self-existence, self- creation, and creation by external agency. 
Of these the last is useless : it commits us to an infinite series 
of such agencies, and even then leaves us where we were. By 
the second we are practically involved in the same predica- 
ment ; since, as already shown, self- creation implies an infinite 
series of potential existences. We are obliged therefore to fall 
back upon the first, which is the one commonly accepted and 
commonly supposed to be satisfactory. Those who cannot 
conceive a self- existent universe ; and who therefore assume 
a creator as the source of the universe ; take for granted that 
they can conceive a self-existent creator. The mystery 
which they recognize in this great fact surrounding them on 
every side, they transfer to an alleged source of this great 
fact ; and then suppose that they have solved the mystery. 
But they delude themselves. As was proved at the outset of 
the argument, self- existence is rigorously inconceivable ; and 
this holds true whatever be the nature of the object of which 
it is predicated. Whoever agrees that the atheistic hypo- 
thesis is untenable because it involves the impossible idea of 
self-existence, must perforce admit that the theistic hypo- 
thesis is untenable if it contains the same impossible idea. 

Thus these three different suppositions respecting the origin 
of things, verbally intelligible though they are, and severally 
seeming to their respective adherents quite rational, turn out, 
vvhen critically examined, to be literally unthinkable. It is 
not a question of probability, or credibility, but of conceiv- 
ability. Experiment proves that the elements of these hypo- 



36 ULTIMATE RELIGIOUS IDEAS. 

theses cannot even be put together in consciousness; and 
we can entertain them only as we entertain such pseud-ideas 
as a square fluid and a moral substance — only by abstaining 
from the endeavour to render them into actual thoughts, j 
Or, reverting to our original mode of statement, we may say 
that they severally* involve symbolic conceptions of the illegiti- 
mate and illusive kind. Differing so widely as they seem to 
do, the atheistic, the pantheistic, and the theistic hypotheses 
contain the same ultimate element. It is impossible to avoid 
making the assumption of self- existence somewhere; and 
whether that assumption be made nakedly, or under compli- 
cated disguises, it is equally vicious, equally unthinkable. Be 
it a fragment of matter, or some fancied potential form of 
matter, or 6ome more remote and still less imaginable cause, 
our conception of its self- existence can be formed only by 
joining with it the notion of unlimited duration through past 
time. And as unlimited duration is inconceivable, all those 
formal ideas into which it enters are inconceivable ; and indeed, 
if such an expression is allowable, are the more inconceivable 
in proportion as the other elements of the ideas are indefinite. 
So that in fact, impossible as it is to think of the actual uni- 
verse as self- existing, we do but multiply impossibilities of 
thought by every attempt we make to explain its existence. 

§ 12. If from the origin of the Universe we turn to its 
nature, the like insurmountable difficulties rise up before us 
on all sides — or rather, the same difficulties under new aspects. 
We find ourselves on the one hand obliged to make certain 
assumptions ; and yet on the other hand we find these assump- 
tions cannot be represented in thought. 

When we inquire what is the meaning of the various effects 
produced upon our senses — when we ask how there come to 
be in our consciousness impressions of sounds, of colours, of 
tastes, and of those various attributes which we ascribe to 
bodies ; we are compelled to regard them as the effects of 
pome cause. We may stop short in the beh'ef that this cause 



ULTIMATE RELIGIOUS IDEAS. 37 

is what we call matter. Or we may conclude, as some do, that 
matter is only a certain mode of manifestation of spirit ; 
which is therefore the true cause. Or, regarding matter and 
spirit as proximate agencies, we may attribute all the changes 
wrought in our consciousness to immediate divine power. 
But be the cause we assign what it may, we are obliged to 
suppose some cause. And we are not only obliged to suppose 
some cause, but also a first cause. The matter, or spirit, or 
whatever we assume to be the agent producing on us these 
various impressions, must either be the first cause of them or 
not. If it is the first cause, the conclusion is reached. If it 
is not the first cause, then by implication there must be a 
cause behind it ; which thus becomes the real cause of the 
effect. Manifestly, however complicated the assumptions, the 
same conclusion must inevitably be reached. "We cannot 
think at all about the impressions which the external world 
produces on us, without thinking of them as caused ; and we 
cannot carry out an inquiry concerning their causation, with- 
out inevitably committing ourselves to the hypothesis of a 
First Cause. 

But now if we go a step further, and ask what is the nature 
of this First Cause, we are driven by an inexorable logic to 
certain further conclusions. Is the First Cause finite or in- 
finite ? If we say finite we involve ourselves in a dilemma. 
To think of the First Cause as finite, is to think of it as 
limited. To think of it as limited, necessarily implies a con- 
ception of something beyond its limits : it is absolutely im- 
Lble to conceive a thing as bounded without conceiving a 
m surrounding its boundaries. "What now must we say of 
this region ? If the First Cause is limited, and there conse- 
quently lies something outside of it, this something must have 
no First Cause — must be uncaused. But if we admit that there 
can be something uncaused, there is no reason to assume a cause 
tor anything. If beyond that finite region over which the First 
Cause extends, there lies a region, which we are compelled to 
regard as infinite, over which i- does not extend — if we admit 



38 ULTIMATE RELIGIOUS IDEAS. 

that there is an infinite uncaused surrounding the finite caused 5 
we tacitly abandon the hypothesis of causation altogether. Thus 
it is impossible to consider the First Cause as finite. And if 
it cannot be finite it must be infinite. 

Another inference concerning the First Cause is equally 
unavoidable. It must be independent. If it is dependent it 
cannot be the First Cause ; for that must be the First 
Cause on which it depends. It is not enough to say that it is 
partially independent; since this implies some necessity which 
determines its partial dependence, and this necessity, be it 
what it may, must be a higher cause, or the true First Cause, 
which is a contradiction. But to think of the First Cause as 
totally independent, is to think of it as that which exists in 
the absence of all other existence ; seeing that if the presence 
of any other existence is necessary, it must be partially de- 
pendent on that other existence, and so cannot be the First 
Cause. Not only however must the First Cause be a form of 
being which has no necessary relation to any other form of 
bemg, but it can have no necessary relation within itself. 
There can be nothing in it which determines change, and yet 
nothing which prevents change. For if it contains something 
which imposes such necessities or restraints, this something 
must be a cause higher than the First Cause, which is absurd. 
Thus the First Cause must be in every sense perfect, complete, 
total : including within itself all power, and transcending all 
law. Or to use the established word, it must be absolute. 

Here theh. respecting the nature of the Universe, we seem 
committed to certain unavoidable conclusions. The objects 
and actions surrounding us, not less than the phenomena of 
our own consciousness, compel us to ask a cause ; in our search 
for a cause, we discover no resting place until we arrive at the 
hypothesis of a First Cause ; and we have no alternative but 
to regard this First Cause as Infinite and Absolute. These 
are inferences forced upon us by arguments from which there 
appears no escape. It is hardly needful however to show 
those who have followed thus far, how illusive are these 



ULTIMATE RELIGIOUS IDEAS. 39 

• 

reasonings and their results. But that it wouid tax the 
reader's patience to no purpose, it might easily be proved 
that the materials of which the argument is built, equally 
with the conclusions based on them, are merely symbolic con- 
ceptions of the illegitimate order. Instead, however, of re- 
peating the disproof used above, it will be desirable to pursue 
another method ; showing the fallacy of these conclusions by 
disclosing their mutual contradictions. 

Here I cannot do better than avail myself of the demonstra- 
tion which Mr Mansel, carrying out in detail the doctrine of 
Sir AVilliam Hamilton, has given in his " Limits of Religious 
Thought." And I gladly do this, not only because his mode 
of presentation cannot be improved, but also because, writing 
as he does in defence of the current Theology, his reasonings 
will be the more acceptable to the majority of readers. 

§ 13. Having given preliminary definitions of the First 
Cause, of the Infinite, and of the Absolute, Mr Mansel says : — 

" But these three conceptions, the Cause, the Absolute, the 
Infinite, all equally indispensable, do they not imply contra- 
diction to each other, when viewed in conjunction, as attributes 
of one and the same Being ? A Cause cannot, as such, be 
absolute : the Absolute cannot, as such, be a cause. The cause, 
as such, exists only in relation to its effect : the cause is a 
cause of the effect ; the effect is an effect of the cause. On 
the other hand, the conception of the Absolute implies a possi- 
ble existence out of all relation. "We attempt to escape from 
this apparent contradiction, by introducing the idea of succes- 
sion in time. The Absolute exists first by itself, and after- 
wards becomes a Cause. But here we are checked by the 
third conception, that of the Infinite. How can the Infinite 
become that which it was not from the first ? If Causation is 
a possible mode of existence, that which exists without causing 
is not infinite ; that which becomes a cause has passed beyond 
its former limits." * * * 

" Supposing the Absolute to become a cause, it will follow 



10 ULTIMATE RELIGIOUS IDEAS. 

# 

that it operates by means of freewill and consciousness. For 
a necessary cause cannot' be conceived as absolute and infinite. 
If necessitated by something beyond itself, it is thereby Limit- 
ed by a superior power ; and if necessitated by itself, it has in 
its own nature a necessary relation to its effect. The act of 
causation must therefore be voluntary ; and volition is only 
possible in a conscious being. But consciousness again is 
only conceivable as a relation. There must be a conscious 
subject, and an object of which he is conscious. The subject 
is a subject to the object ; the object is an object to the sub- 
ject ; and neither can exist by itself as the absolute. This 
difficulty, again, may be for the moment evaded, by distin- 
guishing between the absolute as related to another and the 
absolute as related to itself. The Absolute, it may be said, 
may possibly be conscious, provided it is only conscious of it- 
self. But this alternative is, in ultimate analysis, no less self- 
destructive than the other. For the object of consciousness, 
whether a mode of the subject's existence or not, is either 
created in and by the act of consciousness, or has an existence 
independent of it. In the former case, the object depends 
upon the subject, and the subject alone is the true absolute. 
In the latter case, the subject depends upon the object, and 
the object alone is the true absolute. Or if we attempt a third 
hypothesis, and maintain that each exists independently of the 
other, we have no absolute at all, but only a pair of relatives ; 
for coexistence, whether in consciousness or not, is itself a 
relation." 

"The corollary from this reasoning is obvious. Not only 
is the Absolute, as conceived, incapable of a necessary relation 
to anything else; but it is also incapable of containing, by 
the constitution of its own nature, an essential relation with- 
in itself; as a whole, for instance, composed of parts, or as a 
substance consisting of attributes, or as a conscious subject 
in antithesis to an object. For if there is in the absolute any 
principle of unity, distinct from the mere accumulation of 
parts or attributes, this principle alone is the true absolute 



ULTIMATE RELIGIOUS IDEAS. 41 

If, on the otlicr hand, there is no such principle, then there is 
no absolute at all, but only a plurality of relatives. The 
almost unanimous voice of philosophy, in pronouncing that 
the absolute is both one and simple, must be accepted as the 
voice of reason also, so far as reason has any voice in the 
matter. But this absolute unity, as indifferent and contain- 
ing no attributes, can neither be distinguished from the multi- 
plicity of finite beings by any characteristic feature, nor bo 
identified with them in their multiplicity. Thus we are land- 
ed in an inextricable dilemma. The Absolute cannot be con- 
ceived as conscious, neither can it be conceived as unconscious: 
it cannot be conceived as complex, neither can it be conceived 
as simple : it cannot be conceived by difference, neither can it 
be conceived by the absence of difference : it cannot be iden- 
tified with the universe, neither can it be distinguished from 
it. The One and the Many, regarded as the beginning of 
existence, are thus alike incomprehensible." 

" The fundamental conceptions of Rational Theology being 
thus self-destructive, we may naturally expect to find the same 
antagonism manifested in their special applications. * * * 
How, for example, can Infinite Power be able to do all things, 
and yet Infinite Goodness be unable to do evil ? How can In- 
finite Justice exact the utmost penalty for every sin, and yet 
Infinite Mercy pardon the sinner ? How can Infinite Wisdom 
know all that is to come, and yet Infinite Freedom be at liberty 
to do or to forbear ? How is the existence of Evil compatible 
with that of an infinitely perfect Being ; for if he wills it, ho 
is not infinitely good ; and if he wills it not, his will is 
thwarted and his sphere of action limited ?" * * * 

" Let us, however, suppose for an instant that these difficul- 
ties are surmounted, and the existence of the Absolute securely 
established on the testimony of reason. Still we have not 
succeeded in reconciling this idea with that of a Cause : we 
have done nothing towards explaining how the absolute can 
give rise to the relative, the infinite to the finite. If the con- 
dition of causal activity is a higher state than that of qui- 



42 ULTIMATE RELIGIOUS IDEAS. 

escence, tlie Absolute, whether acting voluntarily or involun- 
tarily, has passed from a condition of comparative imperfection 
to one of comparative perfection ; and therefore was not 
originally perfect. If the state of activity is an inferior state 
to that of quiescence, the Absolute, in becoming a cause, has 
lost its original perfection. There remains only the supposi- 
tion that the two states are equal, and the act of creation one of 
complete indifference. But this supposition annihilates the 
unity of the absolute, or it annihilates itself. If the act of 
creation is real, and yet indifferent, we must admit the possi- 
bility of two conceptions of the absolute, the one as productive, 
the other as non-productive. If the act is not real, the sup- 
position itself vanishes." * * * 

" Again, how can the relative be conceived as coming into 
being ? If it is a distinct reality from the absolute, it must be 
conceived as passing from non-existence into existence. But 
to conceive an object as non-existent, is again a self-contradic- 
tion ; for that which is conceived exists, as an object of thought, 
in and by that conception. We may abstain from thinking of 
an object at all ; but, if we think of it, we cannot but think of 
it as existing. It is possible at one time not to think of an 
object at all, and at another to think of it as already in being ; 
but to think of it in the act of becoming, in the progress from 
not being into being, is to think that which, in the very 
thought, annihilates itself." * * * 

" To sum up briefly this portion of my argument. The 
c onception of the Absolute and Infinite, from whatever side we 
view it, appears encompassed with contradictions. There is 
a contradiction in supposing such an object to exist, whether 
alone or in conjunction with others ; and there is a contradic- 
tion in supposing it not to exist. There is a contradiction in 
conceiving it as one ; and there is a contradiction in conceiv- 
ing it as many. There is a contradiction in conceiving it as 
personal ; and there is a contradiction in conceiving it as im- 
personal. It cannot, without contradiction, be represented as 
active ; nor, withe ut equal contradiction, be represented as 



ULTIMATE RELIGIOUS IDEAS. 43 

inactive. It cannot be conceived as the sum of all existence ; 
nor yet can it be conceived as a part only of that sum." 

§ 14. And now what is the bearing of these results on the 
question before us ? Our examination of Ultimate Religious 
Ideas has been carried on with the view of making manifest 
some fundamental verity contained in them. Thus far how- 
ever we have arrived at negative conclusions only. Criti- 
cising the essential conceptions involved in the different 
orders of beliefs, we find no one of them to be logically 
defensible. Passing over the consideration of credibility, and 
confining ourselves to that of conceivability, we see that 
Atheism, Pantheism, and Theism, when rigorously analysed, 
severally prove to be absolutely unthinkable. Instead of 
disclosing a fundamental verity existing in each, our invest- 
igation seems rather to have shown that there is no fund- 
amental verity contained in any. To carry away this 
conclusion, however, would be a fatal error ; as we shall 
shortly see. 

Leaving out the accompanying moral code, which is in all 
cases a supplementary growth, a religious creed is definable 
as a theory of original causation. By the lowest savages 
the genesis of things is not inquired about: anomalous ap- 
pearances alone raise the question of agency. But be it in 
the primitive Ghost-theory which assumes a human person- 
ality behind each unusual phenomenon ; be it in Polytheism, 
in which these personalities are partially generalized ; be it 
in Monotheism, in which they are wholly generalized ; or be 
it in Pantheism, in which the generalized personality becomes 
one with the phenomena ; we equally find an hypothesis 
which is supposed to render the Universe comprehensible. 
Nay, even that which is commonly regarded as the negation 
of all Religion — even positive Atheism, conies within the 
definition; for it, too, in asserting the self-existence of Space, 
Matter, and Motion, which it regards as adequate causes of 
every appearance, propounds an d priori theory from which 



•U ULTIMATE RELIGIOUS IDEAS. 

it holds the facts to bo deducible. Now every theory tacitly 
asserts two things : firstly, that there is something to be 
explained ; secondly, that such and such is the explanation. 
Hence, however widely different speculators may disagree in 
the solutions they give of the same problem ; yet by implica- 
tion they agree that there is a problem to be solved. Here 
then is an element which all creeds have in common. Reli- 
gions diametrically opposed in their overt dogmas, are 
yet perfectly at one in the tacit conviction that tho exist- 
ence of the world with all it contains and all which surrounds 
it, is a mystery ever pressing for interpretation. On this 
point, if on no other, there is entire unanimity. 

Thus we come within sight of that which we seek. In the 
last chapter, reasons were given for inferring that human 
beliefs in general, and especially the perennial ones, contain, 
under whatever disguises of error, some soul of truth ; and 
here we have arrived at a truth underlying even the grossest 
superstitions. We saw further that this soul of truth was 
most likely to be some constituent common to conflicting 
opinions of the same order ; and here we have a constituent 
which may be claimed alike by all religions. It was pointed 
out that this soul of truth would almost certainly be more 
abstract than any of the beliefs involving it ; and the truth 
we have arrived at is one exceeding in abstractness the most 
abstract religious doctrines. In every respect, therefore, our 
conclusion answers to the requirements. It has all the 
characteristics which we inferred must belong to that funda- 
mental verity expressed by religions in general. 

That this is the vital element in all religions is further 
proved by the fact, that it is the element which not only survives 
every change, but grows more distinct the more highly the 
religion is developed. Aboriginal creeds, though pervaded 
by the idea of personal agencies which are usually unseen, 
yet conceive these agencies under perfectly concrete and 
ordinary forms — class them with the visible agencies of men 
and animals ; and so hide a vaguo perception of mystery in 



ULTIMATE RELIGIOUS IDEAS. 45 

Aisguises as unmysterious as possible. The Polytheistic con- 
ceptions in their advanced phases, represent the presiding 
personalities in greatly idealized shapes, existing in a remote 
region, working in subtle ways, and communicating with men 
by omens or through inspired persons ; that is, the ultimate 
causes of things are regarded as less familiar and compre- 
hensible. The growth of a Monotheistic faith, accompanied 
as it is by a denial of those beliefs in which the divine nature 
is assimilated to the human in all its lower propensities, shows 
us a further step in the same direction ; and however imper- 
fectly this higher faith is at first realized, we yet see in altars 
" to the unknown and unknowable God," and in the worship 
of a God that cannot by any searching be found out, that 
there is a clearer recognition of the inscrutableness of creation. 
Further developments of theology, ending in such assertions 
as that " a God understood would be no God at all," and " to 
think that God is, as we can think him to be, is blasphemy," 
exhibit this recognition still more distinctly ; and it pervades 
all the cultivated theology of the present day. Thus while 
other constituents of religious creeds one by one drop away, 
this remains and grows even more manifest ; and so is shown 
to be the essential constituent. 

Xor doe3 the evidence end here. "Not only is the omni- 
presence of something which passes comprehension, that most 
abstract belief which is common to all religions, which be- 
comes the more distinct in proportion as they develope, and 
which remains after their discordant elements have been 
mutually cancelled ; but it is that belief which the most un- 
sparing criticism of each leaves unquestionable — or rather 
makes ever clearer. It has nothing to fear from the most 
inexorable logic ; but on the contrary is a belief which the 
most inexorable logic shows to be more profoundly true than 
any religion supposes. For every religion, setting out though 
it does with the tacit assertion of a mystery, forthwith pro- 
ceeds to give some solution of this mystery ; and so asserts 
that it is not a mystery passing human comprehension. But 



iO ULTIMATE RELIGIOUS IDEAS. 

an examination of the solutions they severally propound, 
shows them to be uniformly invalid. The analysis of every 
possible hypothesis proves, not simply that no hypothesis is 
sufficient, but that no hypothesis is even thinkable. And 
thus the mystery which all religions recognize, turns out to 
be a far more transcendent mystery than any of them suspect 
—not a relative, but an absolute mystery. 

Here, then, is an ultimate religious truth of the highest 
possible certainty— a truth in which religions in general are 
at one with each other, and with a philosophy antagonistic 
to their special dogmas. And this truth, respecting which 
there is a latent agreement among all mankind from the 
fetish- worshipper to the most stoical critic of human creeds, 
must be the one we seek. If Eeligion and Science are to be 
reconciled, the basis of reconciliation must be this deepest, 
widest, and most certain of all facts — that the Power which 
the Universe manifests to us is utterly inscrutable. 



/ 



CHAPTER III. 

ULTIMATE SCIENTIFIC IDEAS. 

§ 15. What are Space and Time ? Two hypotheses are 
current respecting them : the one that they are objective, and 
the other that they are subjective — the one that they are 
external to, and independent of, ourselves, the other that 
they are internal, and appertain to our own consciousness. 
Let us see what becomes of these hypotheses under analysis. 

To say that Space and Time exist objectively, is to say that 
they are entities. The assertion that they are non-entities is 
self- destructive : non-entities are non-existences; and to allege 
that non-existences exist objectively, is a contradiction in 
terms. Moreover, to deny that Space and Time are things, 
and so by implication to call them nothings, involves the 
absurdity that there are two lands of nothing. Neither can 
they be regarded as attributes of some entity ; seeing, not 
only that it is impossible really to conceive any entity of 
which they are attributes, but seeing further that we cannot 
think of them as disappearing, even if everything else disap- 
peared ; whereas attributes necessarily disappear along with 
the entities they belong to. Thus as Space and Time cannot 
be either non-entities, nor the attributes of entities, we have 
no choice but consider them as entities. But while, on 

the hypothesis of their objectivity, Space and Time must be 
classed as things, we find, on experiment, that to represent 
them in thought as things is impossible. To be conceived 
at all, a thing must be conceived as having attributes. We 



48 ULTIMATE SCIENTIFIC IDEAS. 

can distinguish, something from nothing, only by the power 
which the something has to act on our consciousness; the 
several affections it produces on our consciousness (or else the 
hj^othetical causes of them), we attribute to it, and call 
its attributes ; and the absence of these attributes is the 
absence of the terms in which the something is conceived, 
and involves the absence of a conception. What now are the 
attributes of Space ? The only one which it is possible for a 
moment to think of as belonging to it, is that of extension ; 
and to credit it with this implies a confusion of thought. 
For extension and Space are convertible terms : by extension, 
as we ascribe it to surrounding objects, we mean occupancy 
of Space ; and thus to say that Space is extended, is to say 
that Space occupies Space. How we are similarly unable 
to assign any attribute to Time, scarcely needs pointing 
out. Nor are Time and Space unthinkable as entities 

only from the absence of attributes ; there is another peculi- 
arity, familiar to readers of metaphysics, which equally ex- 
cludes them from the category. All entities which we actually 
know as such, are limited ; and even if we suppose ourselves 
either to know or to be able to conceive some unlimited 
entity, we of necessity in so classing it positively separate it 
from the class of limited entities. But of Space and Time 
we cannot assert either limitation or the absence of limitation. 
We find ourselves totally unable to form any mental image of 
unbounded Space ; and yet totally unable to imagine bounds 
beyond which there is no Space. Similarly at the other 
extreme : it is impossible to think of a limit to the divisi- 
bility of Space ; yet equally impossible to tnink of its infinite 
divisibility. And, without stating them, it will be seen that we 
labour under like impotencies in respect to Time. Thus 

we cannot conceive Space and Time as entities, and are 
equally disabled from conceiving them as either the attributes 
of entities or as non- entities. We are compelled to think oi 
them as existing ; and yet cannot bring them within those 
coiditions under which existences are represented in thought. 



ULTIMATE SCIENTIFIC IDEAS. 49 

Shall we then take refuge in the Kantian doctrine ? shall 
we say that Space and Time are forms of the intellect, — " d 
priori laws or conditions of the conscious mind" ? To do this 
is to escape from great difficulties by rushing into greater. 
The proposition with which Kant's philosophy sets out, 
verbally intelligible though it is, cannot by any effort be 
rendered into thought — cannot be interpreted into an idea 
properly so called, but stands merely for a pseud-idea. In 

the first place, to assert that Space and Time, as we are con- 
scious of them, are subjective conditions, is by implication 
to assert that they are not objective realities : if the Space 
and Time present to our minds belong to the ego, then of 
neccessity they do not belong to the non-ego. Now it is abso- 
lutely impossible to think this. The very fact on which 
Kant bases his hypothesis — namely that our consciousness of 
Space and Time cannot be suppressed — testifies as much ; for 
that consciousness of Space and Time which we cannot rid 
ourselves of, is the consciousness of them as existing ob- 
jectively. It is useless to reply that such an inability must 
inevitably result if they are subjective forms. The question 
here is — TVhat does consciousness directly testify ? And the 
direct testimony of consciousness is, that Time and Space are 
not within but without the mind ; and so absolutely independ- 
ent of it that they cannot be conceived to become non-existent 
even were the mind to become non-existent. Besides 

being positively unthinkable in what it tacitly denies, 
the theory of Kant is equally unthinkable in what it openly 
affirms. It is not simply that we cannot combine the thought 
of Space with the thought of our own personality, and con- 
template the one as a property of the other — though our 
inability to do this would prove the inconceivableness of the 
hypothesis — but it is that the hypothesis carries in itself the 
proof of its own inconceivableness. For if Space and Timo 
are forms of thought, they can never be thought of; since it 
is impossible for anything to be at once the form of thought 
and the matter of thought. That Space and Time are ob» 



50 ULTIMATE SCIENTIFIC IDEAS. 

jects of consciousness, Kant emphatically asserts by saying 
that it is impossible to suppress the consciousness of them. 
How then, if they are objects of consciousness, can they at the 
same time be conditions of consciousness ? If Space and Time 
are the conditions under which we think, then when we think 
of Space and Time themselves, our thoughts must be uncon- 
ditioned ; and if there can thus be unconditioned thoughts, 
what becomes of the theory ? 

It results therefore that Space and Time are wholly in- 
comprehensible. The immediate knowledge which we seem 
to have of them, proves, when examined, to be total ignor- 
ance. "While our belief in their objective reality is in- 
surmountable, we are unable to give any rational account 
of it. And to posit the alternative belief (possible to state 
but impossible to realize) is merely to multiply irrationali- 
ties. 

§ 16. Were it not for the necessities of the argument, it 
would be inexcusable to occupy the reader's attention with 
the threadbare, and yet unended, controversy respecting the 
di visibility of matter. Matter is either infinitely divisible or 
it is not : no third possibility can be named. WTiich of the 
alternatives shall we accept ? If we say that Matter is in- 
finitely divisible, we commit ourselves to a supposition not 
realizable in thought. We can bisect and re-bisect a body, 
and continually repeating the act until we reduce its parts to 
a size no longer physically divisible, may then mentally con- 
tinue the process without limit. To do this, however, is not 
really to conceive the infinite divisibility of matter, but to form 
a symbolic conception incapable of expansion into a real one, 
and not admitting of other verification. Really to conceive 
the infinite divisibility of matter, is mentally to follow out the 
divisions to infinity ; and to do this would require infinite 
time. On the other hand, to assert that matter is not 
infinitely divisible, is to assert that it is reducible to parts 
which no conceivable power can divide ; and this verba] 



ULTIMATE SCIENTIFIC IDEAS. 51 

mpposition can no more be represented in thought than the 
other. For each of such ultimate parts, did they exist, must 
have an under and an upper surface, a right and a left side, 
like any larger fragment. Now it is impossible to imagine 
its sides so near that no plane of section can be conceived be- 
tween them ; and however great be the assumed force of 
cohesion, it is impossible to shut out the idea of a greater 
force capable of overcoming it. So that to human intelli- 
gence the one hypothesis is no more acceptable than the 
other ; and yet the conclusion that one or other must agree 
with the fact, seems to human intelligence unavoidable. 

Again, leaving this insoluble question, let us ask whether 
substance has, in reality, anything like that extended solidity 
which it presents to our consciousness. The portion of space 
occupied by a piece of metal, seems to eyes and fingers per- 
fectly filled : we perceive a homogeneous, resisting mass, 
without any breach of continuity. Shall we then say that 
Matter is as actually solid as it appears ? Shall we say that 
whether it consists of an infinitely divisible element or of 
ultimate units incapable of further division, its parts are 
everywhere in actual contact ? To assert as much entangles 
us in insuperable difficulties. Were Matter thus absolutely 
solid, it would be, what it is not — absolutely incompressible ; 
since compressibility, implying the nearer approach of con- 
stituent parts, is not thinkable unless there is unoccupied 
space between the parts. Nor is this all. It is an estab- 
lished mechanical truth, that if a body, moving at a given 
velocity, strikes an equal body at rest in such wise that the 
two move on together, their joint velocity will be but half 
that of the striking body. Now it is a law of which the 
negation is inconceivable, that in passing from any one 
degree of magnitude to any other, all intermediate degrees 
must be passed through. Or, in the case before us, a body 
moving at velocity 4, cannot, by collision, be reduced to 
velocity 2, without passing through all velocities between 4 
and 2. But were Matter truly eolid — were its units abso 



52 ULTIMATE SCIENTIFIC IDEAS. 

lutely incompressible and in absolute contact — this "law of 
continuity," as it is called, would be broken in every case 
of collision. For when, of two such units, one moving at 
velocity 4 strikes another at rest, the striking unit must have 
its velocity 4 instantaneously reduced to velocity 2 ; must 
pass from velocity 4 to velocity 2 without any lapse of time, 
and without passing through intermediate velocities ; must be 
moving with velocities 4 and 2 at the same instant, which is 
impossible. 

The supposition that Matter is absolutely solid being 
untenable, there presents itself the Newtonian supposition, 
that it consists of solid atoms not in contact but acting on 
each other by attractive and repulsive forces, varying with 
the distances. To assume this, however, merely shifts the 
difficulty : the problem is simply transferred from the aggre- 
gated masses of matter to these hypothetical atoms. For 
granting that Matter, as we perceive it, is made up of such dense 
extended units surrounded by atmospheres of force, the 
question still arises — What is the constitution of these units ? 
Wq have no alternative but to regard each of them as a 
small piece of matter. Looked at through a mental micro- 
scope, each becomes a mass of substance such as we have just 
been contemplating. Exactly the same inquiries may be 
made respecting the parts of which each atom consists ; while 
exactly the same difficulties stand in the way of every answer. 
And manifestly, even were the hypothetical atom assumed to 
consist of still minuter ones, the difficulty would re- appear at 
the next step ; nor could it be got rid of even by an infinite 
scries of such assumptions. 

Tjoscovich's conception yet remains to us. Seeing that 
Matter could not, as Leibnitz suggested, be composed of un- 
cxtended monads (since the juxta-position of an infinity of 
points having no extension, could not produce that extension 
which matter possesses) ; and perceiving objections to the 
view entertained by Newton ; Boscovich proposed an inter- 
mediate theory, uniting, as he considered, the advantages of 



ULTIMATE SCIENTIFIC IDEAS. 53 

both and avoiding their difficulties. His theory is, that the 
constituents of Matter are centres of force — points without 
dimensions, which attract and repel each other in suchwise as 
to be kept at specific distances apart. And he argues, ma- 
thematically, that the forces possessed by such centres might 
so vary with the distances, that under given conditions the 
centres would remain in stable equilibrium with definite 
interspaces ; and yet, under other conditions, would maintain 
larger or smaller interspaces. This speculation however, 
ingeniously as it is elaborated, and eluding though it does 
various difficulties, posits a proposition which cannot by any 
effort be represented in thought : it escapes all the inconceiv- 
abilities above indicated, by merging them in the one 
inconceivability with which it sets out. A centre of force 
absolutely without extension is unthinkable : answering to 
these words we can form nothing more than a symbolic con- 
ception of the illegitimate order. The idea of resistance 
cannot be separated in thought from the idea of an extended 
body which offers resistance. To suppose that central forces 
can reside in points not infmitesimally small but occupying 
no space whatever — points having position only, with nothing 
to mark their position — points in no respect distinguishable 
from the surrounding points that are not centres of force ; — to 
suppose this, is utterly beyond human power. 

Here it may possibly be said, that though all hypotheses 
respecting the constitution of Matter commit us to inconceiv- 
able conclusions when logically developed, yet we have 
reason to think that one of them corresponds with the fact. 
Though the conception of Matter as consisting of dense indi- 
visible units, is symbolic and incapable of being completely 
tli ought out, it may yet be supposed to find indirect verifica- 
tion in the truths of chemistry. These, it is argued, necessi- 
tate the belief that Matter consists of particles of specific 
weights, and therefore of specific sizes. The general law of 
definite proportions seems impossible on any other condition 
than the existence of ultimate atoms ; and though the com- 



&4 ULTIMATE SCIENTIFIC IDEAS. 

bining weights of the respective elements are termed by 
chemists their " equivalents," for the purpose of avoiding a 
questionable assumption,we are unable to think of the combina- 
tion of such definite weights, without supposing it to take 
place between definite numbers of definite particles. And 
thus it would appear that the Newtonian view is at any rate 
preferable to that of Boscovich. A disciple of Bosco- 

vich, however, may reply that his master's theory is in- 
volved in that of Newton ; and cannot indeed be escaped. 
" What," he may ask, " is it that holds together the parts 
of these ultimate atoms?" "A cohesive force," his oppo- 
nent must answer. "And what," he may continue, "is it 
that holds together the parts of any fragments "into 
which, by sufficient force, an ultimate atom might be 
broken?" Again the answer must be — a cohesive force. 
" And what," he may still ask, " if the ultimate atom were, 
as we can imagine it to be, reduced to parts as small in pro- 
portion to it, as it is in proportion to a tangible mass of 
matter — what must give each part the ability to sustain itself, 
and to occupy space ? " Still there is no answer but — a cohe- 
sive force. Carry the process in thought as far as we may, 
until the extension of the parts is less than can be imagined, 
we still cannot escape the admission of forces by which the 
extension is upheld; and we can find no limit until we 
arrive at the conception of centres of force without any 
extension. 

Matter then, in its ultimate nature, is as absolutely incom- 
prehensible as Space and Time. Frame what suppositions we 
may, we find on tracing out their implications that they leave 
us nothing but a choice between opposite absurdities. 

§ 17. A body impelled by the hand is clearly perceived to 
move, and to move in a definite direction : there seems at first 
sight no possibility of doubting that its motion is real, or that 
it is towards a given point. Yet it is easy to show that we 
not only may be, but usually are, quite wrong in both these 



ULTIMATE SCIENTIFIC IDEAS. 55 

judgments. Here, for instance, is a ship which, for simpli- 
city's sake, we will suppose to be anchored at the equator 
with her head to the West. When the captain walks from 
stem to stern, in what direction does he move ? East is the 
obvious answer— an answer which for the moment may pass 
without criticism. But now the anchor is heaved, and the 
vessel sails to the West with a velocity equal to that at which 
the captain walks. In what direction does he now move 
when he goes from stem to stern ? You cannot say East, for 
the vessel is carrying him as fast towards the West as he 
walks to the East ; and you cannot say West for the converse 
reason. In respect to surrounding space he is stationary ; 
though to all on board the ship he seems to be moving. But 
now are we quite sure of this conclusion ? — Is he really station- 
ary ? When we take into account the Earth's motion round 
its axis, we find that instead of being stationary he is travel- 
ling at the rate of 1000 miles per hour to the East ; so that 
neither the perception of one who looks at him, nor the infer- 
ence of one who allows for the ship's motion, is anything bike 
the truth. Nor indeed, on further consideration, shall we find 
this revised conclusion to be much better. For we have for- 
gotten to allow for the Earth's motion in its orbit. This 
being some 68,000 miles per hour, it follows that, assuming 
the time to be midday, he is moving, not at the rate of 1000 
miles per hour to the East, but at the rate of 67,000 miles per 
hour to the West. Nay, not even now have we discovered 
the true rate and the true direction of his movement. With 
the Earth's progress in its orbit, we have to join that of the 
whole Solar system towards the constellation Hercules ; and 
when we do this, we perceive that he is moving neither East 
nor West, but in a line inclined to the plane of the Ecliptic, 
and at a velocity greater or less (according to the time of the 
year) than that above named. To which let us add, that 
were the dynamic arrangements of our sidereal system fully 
known to us, we should probably discover the direction and 
rate of his actual movement to cliiTer considerably even from 



55 ULTIMATE SCIENTIFIC IDEAS. 

these. How illusive are our ideas of Motion, is thus made 

sufficiently manifest. That which seems moving proves to be 
stationary ; that which seems stationary proves to be moving; 
while that which we conclude to be going rapidly in one 
direction, turns out to be going much more rapidly in the 
opposite direction. And so we are taught that what we are 
conscious of is not the real motion of any object, either in its 
rate or direction ; but merely its motion as measured from an 
assigned position — either the position we ourselves occupy or 
some other. Yet in this very process of concluding that the 
motions we perceive are not the real motions, we tacitly 
assume that there are real motions. In revising our success- 
ive judgments concerning a body's course or velocity, we take 
for granted that there is an actual course and an actual 
velocity — we take for granted that there are fixed points in 
space with respect to which all motions are absolute ; and we 
find it impossible to rid ourselves of this idea. Nevertheless, 
absolute motion cannot even be imagined, much less known. 
Motion as taking place apart from those limitations of space 
which we habitually associate with it, is totally unthinkable. 
For motion is change of place ; but in unlimited space, change 
of place is inconceivable, because place itself is inconceivable. 
Place can be conceived only by reference to other places ; and 
in the absence of objects dispersed through space, a place 
could be conceived only in relation to the limits of space ; 
whence it follows that in unlimited space, place cannot be 
conceived — all places must be equidistant from boundaries 
that do not exist. Thus while we are obliged to think that 
there is an absolute motion, we find absolute motion incom- 
prehensible. 

Another insuperable difficulty presents itself when we 
contemplate the transfer of Motion. Habit blinds us to the 
murvelousness of this phenomenon. Familiar with the fact 
from childhood, we see nothing remarkable in the ability of a 
moving thing to generate movement in a thing that is 
stationary. It is, however, impossible to understand it. In 



1'LTIMATE SCIENTIFIC IDEAS. 57 

what respect does a body after impact differ from itself before 
impact ? "What is this added to it which does not sensibly 
affect any of its properties and yet enables it to traverse 
space ? Here is an object at rest and here is the same object 
moving. In the one state it has no tendency to change its 
place ; but in the other it is obliged at each instant to assume 
a new position. What is it which will for ever go on pro- 
ducing this effect without being exhausted ? and how does it 
dwell in the object ? The motion yon say has been com- 
municated. But how ? — What has been communicated ? 
The striking body has not transferred a thing to the body 
struck; and it is equally out of the question to say that it 
has transferred an attribute. What then has it transferred ? 
Once more there is the old puzzle concerning the connexion 
between Motion and Eest. "We daily witness the gradual 
retardation and final stoppage of things projected from the 
hand or otherwise impelled ; and we equally often witness 
the change from Rest to Motion produced by the application 
of force. But truly to represent these transitions in thought, 
we find impossible. For a breach of the law of continuity 
seems necessarily involved; and yet no breach of it is con- 
ceivable. A body travelling at a given velocity cannot be 
brought to a state of rest, or no velocity, without passing 
through all intermediate velocities. At first sight nothing 
seems easier than to imagine it doing this. It is quite possi- 
ble to think of its motion as diminishing insensibly until 
it becomes infinitesimal ; and many will think equally possi- 
ble to pass in thought from infinitesimal motion to no 
motion. But this is an error. Mentally follow out the 
decreasing velocity as long as yon please, and there still 
remains some velocity. Halve and again halve the rate of 
movement for ever, yet movement still exists ; and the small- 
est movement is separated by an impassable gap from no 
movement. As something, however minute, is infinitely 
great in comparison with nothing ; so is even the least con- 
ceivable motion, infinite as compared with rest. The 



58 ULTIMATE SCIENTIFIC IDEAS. 

converse perplexities attendant on the transition from Rest to 
Motion, need not be specified. These, equally with the forego- 
ing, show ns that though we are obliged to think of such 
changes as actually occurring, their occurrence cannot be 
realized. 

Thus neither when considered i-n connexion ■ with Space, 
nor when considered in connexion with Matter, nor when 
considered in connexion with Rest, do we find that Motion k 
truly cognizable. All efforts to understand its essential 
nature do but bring us to alternative impossibilities of 
thought. 

§ 18. On lifting a chair, the force exerted Ave regard as 
equal to that antagonistic force called the weight of the 
chair ; and we cannot think of these as equal without think- 
ing of them as like in kind ; since equality is conceivable only 
between things that are connatural. The axiom that action 
and reaction are equal and in opposite directions, commonly 
exemplified by this very instance of muscular effort versus 
weight, cannot be mentally realized on any other condition. 
Yet, contrariwise, it is incredible that the force as existing in 
the chair really resembles the force as present to our minds. 
It scarcely needs to point out that the weight of the chair 
produces in us various feelings according as we support it by a 
single finger, or the whole hand, or the leg ; and hence 
to argue that as it cannot be like all these sensations there is 
no reason to believe it like any. It suffices to remark that 
since the force as known to us is an affection of consciousness, 
we cannot conceive the force existing in the chair under the 
same form without endowing the chair with consciousness. 
So that it is absurd to think of Force as in itself like out 
sensation of it, and yet necessary so to think of it if wo 
realize it in consciousness at all. 

How, again, can we understand the connexion between 
Force and Matter ? Matter is known to us only through its 
manifestations cf Force : our ultimate test of Matter is the 



ULTIMATE SCIENTIFIC IDEAS. 59 

ability to resist : abstract its resistance and there remains 
nothing but empty extension. Yet, on the other hand, resist- 
ance is equally unthinkable apart from Matter — apart from 
something extended. Not only, as pointed out some pages 
back, are centres of force devoid of extension unimaginable ; 
but, as an inevitable corollary, we cannot imagine either 
extended or unextended centres of force to attract and repel 
other such centres at a distance, without the intermediation 
of some kind of matter. We have here to remark, what 
could not without anticipation be remarked when treating of 
Matter, that the hypothesis of Newton, equally with that of 
Eoscovich, is open to the charge that it supposes one thing to 
act upon another through a space which is absolutely empty 
— a supposition which cannot be represented in thought. 
This charge is indeed met by the introduction of a hypotheti- 
cal fluid existing between the atoms or centres. But the 
problem is not thus solved : it is simply shifted, and re- appears 
when the constitution of this fluid is inquired into. How 

impossible it is to elude the difficulty presented by the transfer 
of Force through space, is best seen in the case of astronomical 
forces. The Sun acts upon us in such way as to produce the 
sensations of light and heat; and we have ascertained that 
between the cause as existing in the Sun, and the effect as 
experienced on the Earth, a lapse of about eight minutes 
occurs : whence unavoidably result in us, the conceptions of 
both a force and a motion. So that for the assumption of a 
luminiferous ether, there is the defence, not only that the 
exercise of force through 95,000,000 of miles of absolute 
vacuum is inconceivable, but also that it is impossible to con- 
ceive motion in the absence of something moved. Similarly 
in the case of gravitation. Newton described himself as 
unable to think that the attraction of one body for another at 
a distance, could be exerted in the absence of an intervening 
medium. But now let us ask how much the forwarder we 
are if an intervening medium be assumed. This ether whose 
undulations according to the received hypothesis constitute 



60 ULTIMATE SCIENTIFIC IDEAS. 

heat and light, and which is the vehicle of gravitation — how 
is it constituted ? We must regard it, in the way that phy- 
sicists do regard it, as composed of atoms which attract and 
repel each other — infinitesimal it may be in comparison with 
those of ordinary matter, but still atoms. And remembering 
that this ether is imponderable, we are obliged to conclude 
that the ratio between the interspaces of these atoms and the 
atoms themselves, is incommensurably greater than the like 
ratio in ponderable matter ; else the densities could not be 
incommensurable. Instead then of a direct action by the Sun 
upon the Earth without anything intervening, we have to 
conceive the Sun's action propagated through a medium 
whose molecules are probably as small relatively to their inter- 
spaces as are the Sun and Earth compared with the space 
between them : we have to conceive these infinitesimal mole- 
cules acting on each other through absolutely vacant spaces 
which are immense in comparison with their own dimensions. 
How is this conception easier than the other ? We still have 
mentally to represent a body as acting where it is not, and in 
the absence of anything by which its action may be transfer- 
red ; and what matters it whether this takes place on a large 
or a small scale ? We see therefore that the exercise of 

Force is altogether unintelligible. We cannot imagine it 
except through the instrumentality of something having 
extension ; and yet when we have assumed this something, 
we find the perplexity is not got rid of but only postponed. 
We are obliged to conclude that matter, whether ponderable 
or imponderable, and whether aggregated or in its hypotheti ■ 
cal units, acts upon matter through absolutely vacant space ; 
and yet this conclusion is positively unthinkable. 

Yefc another difficulty of conception, converse in nature 
but equally insurmountable, must be added. If, on the 
one hand, we cannot in thought see matter acting upon 
matter through a vast interval of space which is absolutely 
void ; on the other hand, that the gravitation of one particles 
of matter towards another, and towards all others, should 



ULTIMATE SCIENTIFIC IDEAS. Gl 

be absolutely tlio same wlietlicr tlie intervening space is 
filled with, matter or not, is incomprehensible. I lift from 
the ground, and continue to hold, a pound weight. Now 
into the vacancy between it and the ground, is in- 
troduced a mass of matter of any kind whatever, in any 
state whatever — hot or cold, liquid or solid, transparent" or 
opaque, light or dense; and the gravitation of the weight 
is entirely unaffected. The whole Earth, as well as each 
individual of the infinity of particles composing the 
Earth, acts on the pound in absolutely the same way, 
whatever intervenes, or if nothing intervenes. Through 
eight thousand miles of the Earth's substance, each mole- 
cule at the antipodes affects each molecule of the weight 
I hold, in utter indifference to the fulness or emptiness 
of the space between them. So that each portion of matter 
in its dealings with remote portions, treats all intervening 
portions as though they did not exist ; and yet, at the same 
time it recognizes their existence with scrupulous exactness 
in its direct dealings with them. We have to regard gravi- 
tation as a force to which everything in the Universe is 
at once perfectly opaque in respect of itself and perfectly 
transparent in respect of other things. 

While then it is impossible to form any idea of Force 
in itself, it is equally impossible to comprehend its mode 
of exercise. 

§19. Turning now from the outer to the inner woild, let 
us contemplate, not the agencies to which we ascribe onr 
subjective modifications, but the subjective modifications 
themselves. These constitute a series. Difficult as we find 
it distinctly to separate and individualize them, it is neverthe- 
less beyond question that our states of consciousness occur in 
succession. 

Is this chain of states of consciousness infinite or finite ? 
We cannot say infinite ; not only because we have indirectly 
reached -the conclusion that there was a period when it com- 



02 ULTIMATE SCIENTIFIC IDEAS. 

menced, but also because all infinity ia inconceivable — an 
infinite series included. We cannot say finite ; for wo have 
no knowledge of either of its ends. Go back in memory as 
far as we may, we are wholly unable to identify our first 
states of consciousness : the perspective of our thoughts 
vanishes in a dim obscurity where we can make out nothing. 
Similarly at the other extreme. We have no immediate 
knowledge of a termination to the series at a future time ; and 
we cannot really lay hold of that temporary termination of 
the series reached at the present moment. For the state of 
consciousness recognized by us as our last, is not truly our 
last. That any mental affection may be contemplated as one 
of the series, it must be remembered — represented in thought, 
not presented. The truly last state of consciousness is that 
which is passing in the very act of contemplating a state 
just past — that in which we are thinking of the one before as 
the last. So that the proximate end of the chain eludes us, 
as well as the remote en$: 

"But," it may belaid, " though we cannot directly know 
consciousness to be finite in duration, because neither of its 
limits can be actually reached ; yet we can very well conceive 
it to be so." JSTo : not even this is true. In the first placets 
we cannot conceive the terminations of that consciousness 
which alone we really know — our own — any more than we 
can percQiYQ its terminations. For in truth the two acts are 
here one. In either case such terminations must be, as above 
said, not presented in thought, but represented; and they 
must be represented as in the act of occurring. Now to 
represent the termination of consciousness as occurring 
in ourselves, is to think of ourselves as contemplating the 
cessation of the last state of consciousness ; and this implies 
a supposed continuance of consciousness after its last 
state, which is absurd. In the second place, if we regard 
the matter objectively — if we study the phenomena as 
occurring in others, or in the abstract, we are equally foiled. 
Consciousness implies perpetual change and the perpetual 



ULTIMATE SCIENTIFIC IDEAS. 63 

establishment of relations between its successive phases. To 
be known at all, any mental affection must be known as such or 
such — as like these foregoing ones or unlike those : if it is not 
thought of in connexion with others — not distinguished or 
identified by comparison with others, it is not recognized — is 
not a state of consciousness at all. A last state of conscious- 
ness, then, like any other, can exist only through a percep- 
tion of its relations to previous states. But such perception of 
its relations must constitute a state later than the last, which 
is a contradiction. Or to put the difficulty in another form : — 
If ceaseless change of state is the condition on which alone 
consciousness exists, then when the supposed last state 
has been reached by the completion of the preceding change, 
change has ceased ; therefore consciousness has ceased ; there- 
fore the supposed last state is not a state of consciousness at 
all ; therefore there can be no last state of consciousness. In 
short, the perplexity is like that presented by the relations of 
Motion and Rest. As we found it was impossible really to 
conceive Rest becoming Motion or Motion becoming Rest ; so 
here we find it is impossible really to conceive either the 
beginning or the ending of those changes which constitute 
consciousness. 

Hence, while we are unable either to believe or to conceive 
that the duration of consciousness is infinite, we are equally 
unable either to know it as finite, or to conceive it as finite. 

§ 20. Kor do we meet with any greater success when, in- 
stead of the extent of consciousness, we consider its substance. 
The question — What is this that thinks ? admits of no better 
solution than the question to which we have just found none 
but inconceivable answers. 

The existence of each individual as known to himself, has 
been always held by mankind at large, the most incontro- 
vertible of truths. To say — " I am as sure of it as I am sure 
that I exist," is, in common speech, the most emphatic ex- 
pression of certainty. And this fact of personal existence, 



64 ULTIMATE SCIENTIFIC IDEAS. 

testified to by the universal consciousness of men, has been 
made the basis of sundry philosophies ; whence may be drawn 
the inference, that it is held by thinkers, as well as by the 
vulgar, to be beyond all facts unquestionable. 

Belief in the reality of self, is, indeed, a belief which no 
hypothesis enables us to escape. What shall we say of these 
successive impressions and ideas which constitute conscious- 
ness ? Shall we say that they are the affections of something 
called mind, which, as being the subject of them, is the real 
ego ? If we say this, we manifestly imply that the ego is an 
entity. Shall we assert that these impressions and ideas are not 
the mere superficial changes wrought on some thinking sub- 
stance, but are themselves the very body of this substance — 
are severally the modified forms which it from moment to 
moment assumes ? This hypothesis, equally with the fore- 
going, implies that the individual exists as a permanent and 
distinct being ; since modifications necessarily involve some- 
thing modified. Shall we then betake ourselves to the sceptic's 
position, and argue that we know nothing more than our im- 
pressions and ideas themselves — that these are to us the only 
existences ; and that the personality said to underlie them is a 
mere fiction ? We do not even thus escape ; since this pro- 
position, verbally intelligible but really unthinkable, itself 
makes the assumption which it professes to repudiate. For 
how can consciousness be wholly resolved into impressions and 
ideas, when an impression of necessity implies something im- 
pressed ? Or again, how can the sceptic who has decomposed 
his consciousness into impressions and ideas, explain the fact 
that he considers them as his impressions and ideas ? Or 
once more, if, as he must, he admits that he has an impression 
of his personal existence, what warrant can he show for re- 
jeeting this impression as unreal while lie accepts all his other 
impressions as real ? Unless he can give satisfactory answers 
to these queries, which he cannot, he must abandon his con- 
clusions ; and must admit the reality of the individual mind. 

But now, unavoidable as is this belief — established though 



ULTIMATE SCIENTIFIC IDEAS. 65 

it is not only by the assent of mankind at large, endorsed by 
divers philosophers, but by the suicide of the sceptical argu- 
ment — it is yet a belief admitting of no justification by reason : 
nay, indeed, it is a belief which reason, when pressed for a 
distinct answer, rejects. One of the most recent writers who 
has touched upon this question — Mr Mansel — does indeed 
contend that in the consciousness of self, we have a piece of 
real knowledge. The validity of immediate intuition he 
holds in this case unquestionable : remarking that "let 
system-makers say what they will, the unsophisticated sense 
of mankind refuses to acknowledge that mind is but a bundle^ 
of states of consciousness, as matter is (possibly) a bundle of 
sensible qualities. " On which position the obvious comment 
is, that it does not seem altogether a consistent one for a 
Kantist, who pays but small respect to " the unsophisticated 
sense of mankind " when it testifies to the objectivity of space. 
Passing over this, however, it may readily be shown that a 
cognition of self, properly so called, is absolutely negatived 
by the laws of thought. The fundamental condition to all 
consciousness, emphatically insisted upon by Mr Mansel in 
common with Sir "William Hamilton and others, is the anti- 
thesis of subject and object. And on this " primitive dualism 
of consciousness," " from which the explanations of philosophy 
must take their start," Mr Mansel founds his refutation of the 
German absolutists. But now, what is the corollary from this 
doctrine, as bearing on the consciousness of self ? The mental 
act in which self is known, implies, like every other mental 
act, a perceiving subject and a perceived object. If, then, the 
object perceived is self, what is the subject that perceives P or 
if it is the true self which thinks, what other self can it bo 
that is thought of ? Clearly, a true cognition of self implies 
a state in whh-h the knowing and the known are one — in 
which subject and object are identified ; and this Mr Mansel 
rightly holds to be the annihilation of both. 

So that the personality of which each is conscious, and of 
which the existence is to each a fact beyond all others the most 



00 ULTIMATE SCIENTIFIC IDEAS. 

certain, is yet a thing which cannot truly be known at all : 
knowledge of it is forbidden by the very nature of thought. 

§ 21. Ultimate Scientific Ideas, then, are all representative 
of realities that cannot be comprehended. After no matter 
how great a progress in the colligation of facts and the estab- 
lishment of generalizations ever wider and wider — after the 
merging of limited and derivative truths in truths that are 
larger and deeper has been carried no matter how far ; the 
fundamental truth remains as much beyond reach as ever. The 
explanation of that which is explicable, does but bring out 
into greater clearness the inexplicableness of that which re- 
mains behind. Alike in the external and the internal worlds, 
the man of science sees himself in the midst of perpetual changes 
of which he can discover neither the beginning nor the end. 
If, tracing back the evolution of things, he allows himself to 
entertain the hypothesis that the Universe once existed in a 
diffused form, he finds it utterly impossible to conceive how 
this came to be so ; and equally, if he speculates on the 
future, he can assign no limit to the grand succession of phe- 
nomena ever unfolding themselves before him. In like 
manner if he looks inward, he perceives that both ends of the 
thread of consciousness are beyond his grasp ; nay, even 
beyond his power to think of as having existed or as existing 
in time to come. "When, again, he turns from the succession of 
phenomena, external or internal, to their intrinsic nature, he 
is just as much at fault. Supposing him in every case able to 
resolve the appearances, properties, and movements of things, 
into manifestations of Force in Space and Time ; he still finds 
that Force, Space, and Time pass all understanding. Simi- 
larly, though the analysis of mental actions may finally bring 
him down to sensations, as the original materials out of which 
all thought is woven, yet he is little forwarder ; for he can 
give no account either of sensations themselves or of that 
something which is conscious of sensations. Objective and 
subjective things he thus ascertains to be alike inscrutable in 



ULTIMATE SCIENTIFIC IDEAS. O'i 

their substance and genesis. In all directions his investiga- 
tions eventually bring him face to face with an insoluble 
enigma ; and he ever more clearly perceives it to be an insoluble 
enigma. He learns at once the greatness and the littleness of 
the human intellect — its power in dealing with all that comes 
within the range of experience ; its impotence in dealing 
with all that transcends experience. He realizes with a 
special vividness the utter incomprehensibleness of the simplest 
fact, considered in itself. He, more than any other, truly 
knows that in its ultimate essence nothing can be known. 



CHAPTER IV. 

THE RELATIVITY OF ALL KNOWLEDGE. 

§ 22. The same conclusion is thus arrived at, from which- 
ever point we set out. If, respecting the origin and nature 
of things, we make some assumption, we find that through an 
inexorable logic it inevitably commits us to alternative impos- 
sibilities of thought ; and this holds true of every assumption 
that can be imagined. If, contrariwise, we make no assump- 
tion, but set out from the sensible properties of surrounding 
objects, and, ascertaining their special laws of dependence, go 
on to merge these in laws more and more general, until we 
bring them all under some most general laws ; we still find our- 
selves as far as ever from knowing what it is which manifests 
these properties to us : clearly as we seem to know it, our 
apparent knowledge proves on examination to be utterly irre- 
concilable with itself. Ultimate religious ideas and ultimate 
scientific ideas, alike turn out to be merely symbols of the 
actual, not cognitions of it. 

The conviction, so reached, that human intelligence is 
incapable of absolute knowledge, is one that has been slowly 
gaining ground as civiliattion has advanced. Each new 
ontological theory, from time to time propounded in lieu of 
previous ones shown to be untenable, has been followed by a 
new criticism leading to a new scepticism. All possible con- 
ceptions have been one by one tried and found wanting ; and 



THE RELATIVITY OF ALL KNOWLEDGE t>9 

so tlic entire field of speculation has been gradually exhausted 
without positive result: the only result arrived at being 
the negative one above stated — that the reality existing 
behind all appearances is, and must ever be, unknown. To 
this conclusion almost every thinker of note has subscribed. 
" "With the exception," says Sir "William Hamilton, "of a few 
lute Absolutist theorisers in Germany, this is, perhaps, the 
truth of all others most harmoniously re-echoed by every 
philosopher of every school." And among these he names — 
Protagoras, Aristotle, St. Augustin, Boethius, Averroes, 
Albertus JVTagnus, Gerson, Leo Hebrocus, Melancthon, Sca- 
liger, Francis Piccolomini, Giordano Bruno, Campanella, 
Bacon, Spinoza, Xewton, Kant. 

It yet remains to point out how this belief may be estab- 
lished rationally, as well as empirically. JNot only is it that, 
as in the earlier thinkers above named, a vague perception of 
the inscrutableness of things in themselves results from dis- 
covering the illusiveness of sense-impressions ; and not only 
is it that, as shown in the foregoing chapters, definite experi- 
ments evolve alternative impossibilities of thought out of 
every idtimate conception we can frame ; but it is that the 
relativity of our knowledge is demonstrable analytically. 
The induction drawn from general and special experiences, 
may be confirmed by a deduction from the nature of our 
intelligence. Two ways of reaching such a deduction exist. 
Proof that our cognitions are not, and ne^er can be, absolute, 
is obtainable by analyzing either the product of thought, or 
the process of thought. Let us analyze each. 

§ 23. If, when walking through the fields some day in 
September, you hear a rustle a few yards in advance, and 
on observing the ditch- side where it occurs, see the herbage 
agitated, you will probably turn towards the spot to learn by 
what this sound and motion are produced. As you approach 
there flutters into the ditch, a partridge ; on seeing which 



?0 THE RELATIVITY OF ALL KNOWLEDGE. 

your curiosity is satisfied — you have what you call an explan- 
ation of the appearances. The explanation, mark, amounts 
to this ; that whereas throughout life you have had countless 
experiences of disturbance among small stationary bodies, 
accompanying the movement of other bodies among them, 
and have generalized the relation between such disturbances 
and such movements, you consider this particular disturbance 
explained, on finding it to present, an instance of the like 
relation. Suppose you catch the partridge ; and, wish- 

ing to ascertain why it did not escape, examine it, and find 
at one spot, a slight trace of blood upon its feathers. You 
now understand, as you say, what has disabled the partridge. 
It has been wounded by a sportsman — adds another case to 
the many cases already seen by you, of birds being killed or 
injured by the shot discharged at them from fowling-pieces. 
And in assimilating this case to other such cases, consists 
your understanding of it. But now, on consideration, a 

difficulty suggests itself. Only a single shot has struck the 
partridge, and that not in a vital place : the wings are unin- 
jured, as are also those muscles which move them ; and the 
creature proves by its struggles that it has abundant strength. 
Why then, you inquire of yourself, does it not fly ? Occasion 
favouring, you put the question to an anatomist, who fur- 
nishes you with a solution. He points out that this solitary 
shot has passed close to the place at which the nerve supplying 
the wing-muscles of one side, diverges from the spine ; and that 
a slight injury to this nerve, extending even to the rupture of 
a few fibres, may, by preventing a perfect co-ordination in the 
actions of the two wings, destroy the power of flight. You are 
no longer puzzled. But what has happened? — what has 
changed your state from one of perplexity to one of compre- 
hension ? Simply the disclosure of a class of previously 
known cases, along with which you can include this case. 
The connexion between lesions of the nervous system and 
paralysis of limbs has been already many times brought 



THE RELATIVITY OF ALL KNOWLEDGE. 71 

under your notice ; and you here find a relation of cause and 
effect that is essentially similar. 

Let us suppose you are led on to make further inquiries 
concerning organic actions, which, conspicuous and remarkable 
as they are, you had not before cared to understand. How 
is respiration effected ? you ask — why does air periodically 
rush into the lungs ? The answer is that in the higher verte- 
brata, as in ourselves, influx of air is caused by an enlarge- 
ment of the thoracic cavity, due, partly to depression of the 
diaphragm, partly to elevation of the ribs. But how does 
elevation of the ribs enlarge the cavity ? In reply the 
anatomist shows you that the plane of each pair of ribs 
makes an acute angle with the spine ; that this angle widens 
when the moveable ends of the ribs are raised ; and he makes 
you realize the consequent dilatation of the cavity, by point- 
ing out how the area of a parallelogram increases as its angles 
approach to right angles — you understand this special fact 
when you see it to be an instance of a general geometrical 
fact. There still arises, however, the question — why does the 
air rush into this enlarged cavity ? To which comes the 
answer that, when the thoracic cavity is enlarged, the con- 
tained air, partially relieved from pressure, expands, and so loses 
some of its resisting power ; that hence it opposes to the pres- 
sure of the external air a less pressure ; and that as air, like 
every other fluid, presses equally in all directions, motion must 
result along any line in which the resistance is less than 
elsewhere ; whence follows an inward current. And this 
interpretation you recognize as one, when a few facts of like 
kind, exhibited more plainly in a visible fluid such as water, 
are cited in illustration. Again, when it was pointed out 

that the limbs are compound levers acting in essentially the 
same way as levers of iron or wood, you might consider your- 
self as having obtained a partial rationale of animal move- 
ments. The contraction of a muscle, seeming before utterly 
imaccountable, woidd seem less unaccountable were you shown 



72 THE RELATIVITY OF ALL KNOWLEDGE. 

how, by a galvanic current, a series of soft iron magnets could 
be made to shorten itself, through the attraction of each 
magnet for its neighbours : — an alleged analogy which 
especially answers the purpose of our argument ; sincej 
whether real or fancied, it equally illustrates the mental 
illumination that results on finding a class of cases within 
which a particular case may possibly be included. And it 
may be further noted how, in the instance here named, an ad- 
ditional feeling of comprehension arises on remembering that 
the influence conveyed through the nerves to the muscles, is, 
though not positively electric, yet a form of force nearly 
allied to the electric. Similarly when you learn that 

animal heat arises from chemical combination, and so is 
evolved as heat is evolved in other chemical combinations — 
when you learn that the absorption of nutrient fluids through 
the coats of the intestines, is an instance of osmotic action — 
when you learn that the changes undergone by food during 
digestion, are like changes artificially producible in the labora- 
tory ; you regard yourself as knowing something about the 
natures of these phenomena. 

Observe now what we have been doing. Turning to the 
general question, let us note where these successive interpret- 
ations have carried us. We began with quite special and 
concrete facts. In explaining each, and afterwards explain- 
ing the more general facts of which they are instances, we 
have got down to certain highly general facts : — to a geome- 
trical principle or property of space, to a simple law of me- 
chanical action, to a law of fluid equilibrium — to truths in 
physics, in chemistry, in thermology, in electricity. The 
particular phenomena with which we set out, have been 
merged in larger and larger groups of phenomena ; and as 
they have been so merged, we have arrived at solutions that 
we consider profound in proportion as this process has been 
carried far. Still deeper explanations are simply further 
steps in the same direction. When, for instance, it is asked 



THE RELATIVITY OF ALL KNOWLEDGE. 73 

why the law of action of the lever is what it is, or why fluid 
equilibrium and fluid motion exhibit the relations which they 
do, the answer furnished by mathematicians consists in the 
disclosure of the principle of virtual velocities — a principle 
holding true alike in fluids and solids — a principle under 
which the others are comprehended. And similarly, the in- 
sight obtained into the phenomena of chemical combination, 
beat, electricity, &c, implies that a rationale of them, when 
found, will be the exposition of some highly general fact re- 
specting the constitution of matter, of which chemical, 
electrical, and thermal facts, are merely different mani- 
festations. 

Is this process limited or unlimited ? Can we go on foi 
ever explaining classes of facts by including them in larger 
classes ; or must we eventually come to a largest class ? The 
supposition that the process is unlimited, were any one ab- 
surd enough to espouse it, would still imply that an ultimate 
explanation could not be reached ; since infinite time would 
be required to reach it. "While the unavoidable conclusion 
that it is limited (proved not only by the finite sphere of 
observation open to us, but also by the diminution in the. 
number of generalizations that necessarily accompanies in- 
crease of their breadth) equally implies that the ultimate 
fact cannot be understood. For if the successively deeper in- 
terpretations of nature which constitute advancing knowledge, 
are merely successive inclusions of special truths in general 
truths, and of general truths in truths still more general ; it 
obviously follows that the most general truth, not admitting 
of inclusion in any other, does no admit of interpretation, 
Manifestly, as the most general cognition at which we arrive 
cannot be reduced to a more general one, it cannot be under- 
stood. Of necessity, therefore, explanation must eventually 
bring us down to the inexplicable. The deepest truth which 
we can get at, must be unaccountable. Comprehension must 
become something other than comprehension, before the ulti« 
mate fact can be comprehended. 



74 THE RELATIVITY OF ALL KNOWLEDGE. 

§ 24. The inference which we thus find forced upon ua 
when we analyze the product of thought, as exhibited ob- 
jectively in scientific generalizations, is equally forced upon us 
by an analysis of the process of thought, as exhibited sub- 
jectively in consciousness. The demonstration of the neces- 
sarily relative character of our knowledge, as deduced from 
the nature of intelligence, has been brought to its most 
definite shape by Sir William Hamilton. I cannot here do 
better than extract from his essay on the "Philosophy of 
the Unconditioned," the passage containing the substance of 
his doctrine. 

" The mind can conceive,'' he argues, " and consequently 
can know, only the limited, and the conditionally limited. The 
unconditionally unlimited, or the Infinite, the uncondition- 
ally limited, or the Absolute, cannot positively be construed to 
the mind ; they can be conceived, only by a thinking away 
from, or abstraction of, those very conditions under which 
thought itself is realized ; consequently, the notion of the 
Unconditioned is only negative, — negative of the conceivable 
itself. For example, on the one hand we can positively conceive, 
neither an absolute whole, that is, a whole so great, that we 
cannot also conceive it as a relative part of a still greater 
whole ; nor an absolute part, that is, a part so small, that we 
cannot also conceive it as a relative whole, divisible into smaller 
parts. On the other hand, we cannot positively represent, or 
realize, or construe to the mind (as here understanding and 
imagination coincide), an infinite whole, for this could only 
be done by the infinite synthesis in thought of finite wholes, 
which would itself require an infinite time for its accomplish- 
ment ; nor, for the same reason, can we follow out in thought 
an infinite divisibility of parts. The result is the same, 
whether we apply the process to limitation in space, in time, 
or in degree. The unconditional negation, and the uncondi- 
tional affirmation of limitation ; in other words, the infinite 
and absolute, properly so called, are thus equally inconceiv- 
able to us. 



THE RELATIVITY OF ALL KNOWLEDGE. 75 

" As the conditionally limited (which we may briefly call 
the conditioned) is thns the only possible object of knowledge 
and of positive thought — thought necessarily supposes condi- 
tions. To think is to condition; and conditional limitation is 
the fundamental law of the possibility of thought. For, as 
the greyhound cannot outstrip his shadow, nor (by a more 
appropriate simile) the eagle outsoar the atmosphere in which 
he floats, and by which alone he may be supported ; so the 
mind cannot transcend that sphere of limitation, within and 
through which exclusively the possibility of thought is 
realized. Thought is only of the conditioned ; because, as we 
have said, to think is simply to condition. The absolute is 
conceived merely by a negation of conceivability ; and all 
that we know, is only known as 

' won from the void and formless infinite? 

ITow, indeed, it could ever be doubted that thought is only of 
the conditioned, may well be deemed a matter of the prof oundest 
admiration. Thought cannot transcend consciousness ; con- 
sciousness is only possible under the antithesis of a subject 
and object of thought, known only in correlation, and mutually 
limiting each other ; while, independently of this, all that we 
know either of subject or object, either of mind or matter, is 
only a knowledge in each of the particular, of the plural, of 
the different, of the modified, of the pha3nomenal. We admit 
that the consequence of this doctrine is, — that philosojDhy, if 
viewed as more than a science of the conditioned, is impossi- 
ble. Departing from the particular, we admit, that we can 
never, in our highest generalizations, rise above the finite ; 
that our knowledge, whether of mind or matter, can be 
nothing more than a knowledge of the relative manifestations 
of an existence, which in itself it is our highest wisdom to 
recognize as beyond the reach of philosophy, — in the language 
Df St Austin, — ' cognoscendo ignorari, et ignorando cognosci.' 
" The conditioned is the mean between two extremes, — two 



i r J THE RELATIVITY OF ALL KNOWLEDGE. 

inconditionates, exclusive of each other, neither of which can 
be conceived as possible, but of which, on the principles of con- 
tradiction and excluded middle, one must be admitted as 
necessary. On this opinion, therefore, reason is shown to 
be weak, but not deceitful. The mind is not represented as 
conceiving two propositions subversive of each other, as 
equally possible ; but only, as unable to understand as possi- 
ble, either of two extremes ; one of which, however, on 
the ground of their mutual repugnance, it is compelled 
to recognize as true. We are thus taught the salutary 
lesson, that the capacity of thought is not to be constituted 
into the measure of existence ; and are warned from recogniz- 
ing the domain of our knowledge as necessarily co-extensive 
with the horizon of our faith. And by a wonderful revelation, 
we are thus, in the very consciousness of our inability to 
conceive aught above the relative and finite, inspired with a 
belief in the existence of something unconditioned beyond the 
sphere of all comprehensible reality." 

Clear and conclusive as this statement of the case appears 
when carefully studied, it is expressed in so abstract a 
manner as to be not very intelligible to the general reader. 
A more popular presentation of it, with illustrative applica- 
tions, as given by Mr Mansel in his "Limits of Religious 
Thought/' will make it more fully understood. The follow- 
ing extracts, which I take the liberty of making from his 
pages, will suffice. 

" The very conception of consciousness, in whatever mode 
it may be manifested, necessarily implies distinction between 
one object and another. To be conscious, we must be conscious 
of something ; and that something can only be known, as 
that which it is, by being distinguished from that which it is 
aot. But distinction is necessarily limitation ; for, if one 
object is to be distinguished from another, it must possess 
some form of existence which the other has not, or it must 
not possess some form which the other has. But it is obvious 






THE RELATIVITY OF ALL KNOWLEDGE. 77 

the Infinite cannot bs distinguished, as such, from the Finite, 
by the absence of any quality which the Finite possesses ; for 
such absence would be a limitation. Nor yet can it be dis- 
tinguished by the presence of an attribute which the Finite 
has not ; for, as no finite part can be a constituent of an 
infinite whole, this differential characteristic must itself be 
infinite ; and must at the same time have nothing in common 
with the finite. "We are thus thrown back upon our former 
impossibility ; for this second infinite will be distinguished 
from the finite by the absence of qualities which the latter 
possesses. A consciousness of the Infinite as such thus neces- 
sarily involves a self-contradiction ; for it implies the recogni- 
tion, by limitation and difference, of that which can only be 
given as unlimited and indifferent. * * * 

" This contradiction, which is utterly inexplicable on the 
supposition that the infinite is a positive object of human 
thought, is at once accounted for, when it is regarded as the 
mere negation of thought. If all thought is limitation ; — if 
whatever we conceive is, by the very act of conception, 
regarded as finite, — the infinite, from a human point of view, 
is merely a name for the absence of those conditions under 
which thought is possible. To speak of a Conception of the 
Infinite is, therefore, at once to affirm those conditions and to 
deny them. The contradiction, which we discover in such a 
conception, is only that which we have ourselves placed there, 
by tacitly assuming the conceivability of the inconceivable. 
The condition of consciousness is distinction ; and condition 
of distinction is limitation. TVe can have no consciousness of 
Being in general which is not some Being in particular : a 
thing, in consciousness, is one thing out of many. In assum- 
ing the possibility of an infinite object of consciousness, I 
assume, therefore, that it is at the same time limited and 
unlimited; — actually something, without which it could no' 
be an object of consciousness, and actually nothing, without 
which it could not be infinite. * * * 

" A second characteristic of Consciousness is, that it is only 
5 



78 THE RELATIVITY OF ALL KNOWLEDGE. 

possible in the form of a relation. There must be a Subject, 
or person conscious, and an Object, or thing of which he ia 
conscious. There can be no consciousness without the 
union of these two factors ; and, in that union, each exist? 
only as it is related to the other. The subject is a subject, 
only in so far as it is conscious of an object : the object is an 
object, only in so far as it is apprehended by a subject : and 
the destruction of either is the destruction of consciousness 
itself. It is thus manifest that a consciousness of the Abso- 
lute is equally self- contradictory with that of the Infinite. 
To be conscious of the Absolute as such, we must know that 
an object, which is given in relation to our consciousness, is 
identical with one which exists in its own nature, out Of all 
relation to consciousness. But to know this identity, we 
must be able to compare the two together ; and such a com- 
parison is itself a contradiction. "We are in fact required to 
compare that of which we are conscious with that of which 
we are not conscious ; the comparison itself being an act of 
consciousness, and only possible through the consciousness of 
both its objects. It is thus manifest that, even if we could 
be conscious of the absolute, we could not possibly know that 
it is the absolute : and, as we can be conscious of an object as 
such, only by knowing it to be what it is, this is equivalent 
to an admission that we cannot be conscious of the absolute 
at all. As an object of consciousness, every thing is neces- 
sarily relative ; and what a thing may be out of consciousness, 
no mode of consciousness can tell us. 

" This contradiction, again, admits of the same explanation 
as the former. Our whole notion of existence is necessarily 
relative ; for it is existence as conceived by us. But Existence, 
as we conceive it, is but a name for the several ways in which 
objects are presented to our consciousness, — a general term, 
embracing a variety of relations. The Absolute, on the other- 
hand, is a term expressing no object of thought, but only a 
denial of the relation by which thought is constituted. To 
assume absolute existence as an object of thought, is thus to 



THE RELATIVITY OF ALL KNOWLEDGE. 79 

suppose a relation existing when the related terms exist no 
longer. An object of thought exists, as such, in and through 
its relation to a tliinker ; while the Absolute, as such, is inde- 
pendent of all relation. The Conception of the Absolute thus 
implies at the same time the presence and absence of the re- 
lation by which thought is constituted ; and our various en- 
deavours to represent it are only so many modified forms of 
the contradiction involved in our original assumption. Here, 
too, the contradiction is one which we ourselves have made. 
It does not imply that the Absolute cannot exist ; but it im- 
plies, most certainly, that we cannot conceive it as existing. 5 ' 

Here let me point out how the same general inference may" 
be evolved from another fundamental condition of thought, 
omitted by Sir ~W. Hamilton, and not supplied by Mr Han- 
sel ; — a condition which, under its obverse aspect, we have al- 
ready contemplated in the last section. Every complete act 
of consciousness, besides distinction and relation, also implies 
likeness. Before it can become an idea, or constitute a piece 
of knowledge, a mental state must not only be known as 
separate in kind from certain foregoing states to which it is 
known as related by succession ; but it must further be known 
as of the same kind with certain other foregoing states. 
That organization of changes which constitutes thinking, in- 
volves continuous integration as well as continuous differenti- 
ation. "Were each new affection of the mind perceived 
simply as an affection in some way contrasted with the 
preceding ones — were there but a chain of impressions, each 
of which as it arose was merely distinguished from its prede- 
cessors ; consciousness would be an utter chaos. To produce 
that orderly consciousness which we call intelligence, there 
requires the assimilation of each impression to others, 
that occurred earlier in the series. Both the successive 
mental states, and the successive relations which they bear to 
each other, must be classified ; and classification involves not 
only a parting of the unlike, but also a binding together of 
the like. In brief, a true cognition is possible only through 



80 TKE RELATIVITY OF ALL KNOWLEDGE. 

tin accompanying recognition-. Should it be objected 

that if so, there cannot be a first cognition, and hence there 
can be no cognition ; the reply is, that cognition proper arises 
gradually — that during the first stage of incipient intelligence, 
before the feelings produced by intercourse with the outer world 
hive been put into order, there are no cognitions, strictly so 
called; and that, as every infant shows us, these slowly 
emerge out of the confusion of unfolding consciousness as 
fast as the experiences are arranged into groups — as fast as 
the most frequently repeated sensations, and their relations to 
each other, become familiar enough to admit of their recog- 
nition as such or such, whenever they recur. Should it be 
further objected that if cognition pre-supposes recognition, 
there can be no cognition, even by an adult, of an object 
never before seen ; there is still the sufficient answer that in 
so far as it is not assimilated to previously- seen objects, it is 
not known, and that it is known in so far as it is assimilated 
to them. Of this paradox the interpretation is, that an object 
is classifiable in various ways, with various degrees of com- 
pleteness. An animal hitherto unknown (mark the word), 
though not referable to any established species or genus, is 
3 r et recognized as belonging to one of the larger divisions 
— mammals, birds, reptiles, or fishes ; or should it be so 
momalous that its alliance with any of these is not determin- 
able, it may yet be classed as vertebrate or invertebrate ; or if 
it be one of those organisms of which it is doubtful whether 
the animal or vegetal characteristics predominate, it is still 
known as a living body ; even should it be questioned 
whether it is organic, it remains beyond question that it is a 
material object, and it is cognized by being recognized as 
such. "Whence it is manifest that a thing is perfectly known 
only when it is in all respects like certain things previously 
observed ; that in proportion to the number of respects in 
which it is unlike them, is the extent to which it is unknown ; 
and that hence when it has absolutely no attribute in. common 



TILE RELATIVITY OF ALL KNOWLEDGE. 81 

with anything else, it must be absolutely beyond the bounds 
of knowledge. 

Observe the corollary which here concerns us. A cogni- 
tion of the Ecal, as distinguished from the Phenomenal, must, 
if it exists, conform to this law of cognition in general. The 
First Cause, The Infinite, the Absolute, to be known at all, 
must be classed. To be positively thought of, it must be 
thought of as such or such — as of this or that kind. Can it 
be like in kind to anything of which we have sensible 
experience ? Obviously not. Between the creating and the 
created, there must be a distinction transcending any of the 
distinctions existing between different divisions of the created. 
That which is uncaused cannot be assimilated to that which 
is caused : the two being, in the very naming, antithetically 
opposed. The Infinite cannot be grouped along with some- 
thing that is finite ; since, in being so grouped, it must be 
regarded as not-infinite. It is impossible to put the Abso- 
lute in the same category with anything relative, so long as 
the Absolute is defined as that of which no necessary relation 
can be predicated. Is it then that the Actual, though un- 
thinkable by classification with the Apparent, is thinkable by 
classification with itself? This supposition is equally absurd 
with the other. It implies the plurality of the First Cause, 
the Infinite, the Absolute ; and this implication is self-contra- 
dictory. There cannot be more than one First Cause ; seeing 
that the existence of more than one would involve the existence 
of something necessitating more than one, which something 
would be the true First Cause. How self-destructive is the 
assumption of two or more Infinites, is manifest on remember- 
ing that such Infinites, by limiting each other, would become 
finite. And similarly, an Absolute which existed not alone 
but along with other Absolutes, would no longer be an abso- 
lute but a relative. The Unconditioned therefore, as classable 
neither with any form of the conditioned nor with any other 
Unconditioned, cannot be classed at all. And to admit that 
it cannot be known as of such or such kind, is to admit that 
it is unknowable. 



82 THE RELATIVITY OF ALL KNOWLEDGE. 

Thus, from the yery nature of thought, the relativity of our 
knowledge is inferable in three several ways. As we find by 
analyzing it, and as we see it objectively displayed in every 
proposition, a thought involves relation, difference, likeness. 
Whatever does not present each of these does not admit of 
cognition. And hence we may say that the Unconditioned, as 
presenting none of them, is trebly unthinkable. 

§ 25. From yet another point of view we may discern the 
same great truth. If, instead of examining our intellectual 
powers directly as exhibited in the act of thought, or indirectly 
as exhibited in thought when expressed by words, we look at 
the connexion between the mind and the world, a like conclu- 
sion is forced upon us. In the very definition of Life, when 
reduced to its most abstract shape, this ultimate implication 
becomes visible. 

AH vital actions, considered not separately but in their 
ensemble, have for their final purpose the balancing of certain 
outer processes by certain inner processes. There are unceasing 
external forces tending to bring the matter of which organic 
bodies consist, into that state of stable equilibrium displayed 
by inorganic bodies; there are internal forces by which 
this tendency is constantly antagonized; and the perpetual 
changes which constitute Life, may be regarded as incidental 
to the maintenance of the antagonism. To preserve the 
erect posture, for instance, we see that certain weights have 
to be neutralized by certain strains : each limb or other organ, 
gravitating to the Earth and pulling down the parts to which 
it is attached, has to be preserved in position by the tension 
of sundry muscles ; or in other words, the group of forces 
which would if allowed bring the body to the ground, has to 
be counterbalanced by another group of forces. Again, to 
keep up the temperature at a particular point, the external 
process of radiation and absorption of heat by the surround- 
ing medium, must be met by a corresponding internal process 
of chemical combination, whereby more heat may be evolved ; 
to which add, that if from atmospheric changes the loss 



THE RELATIVITY OF ALL KNOWLEDGE. 83 

becomes greater or less, the production must become greater or 
less. And similarly throughout the organic actions in general. 
"When we contemplate the lower kinds of life, we see that 
the correspondences thus maintained are direct and simple ; 
as in a plant, the vitality of which mainly consists in osmotic 
and chemical actions responding to the co-existence of light, 
heat, water, and carbonic acid around it. "But in animals, and 
especially in the higher orders of them, the correspondences 
become extremely complex. Materials for growth and 
repair not being, like those which plants require, everywhere 
present, but being widely dispersed and under special forms, 
have to be found, to be secured, and to be reduced to a fit state 
for assimilation. Hence the need for locomotion ; hence the need 
for the senses ; hence the need for prehensile and destructive 
appliances ; hence the need for an elaborate digestive appa- 
ratus. Observe, however, that these successive complications 
are essentially nothing but aids to the maintenance of the 
organic balance in its integrity, in opposition to those physical, 
chemical, and other agencies which tend to overturn it. And 
observe, moreover, that while these successive complications 
subserve this fundamental adaptation of inner to outer actions, 
they are themselves nothing else but further adaptations of 
inner to outer actions. For what are those movements by 
which a predatory creature pursues its prey, or by which its 
prey seeks to escape, but certain changes in the organism 
fitted to meet certain changes in its ^environment ? "What is 
that compound operation which constitutes the perception of 
a piece of food, but a particular correlation of nervous modifi- 
cations, answering to a particular correlation of physical pro- 
perties ? "What is that process by which food when swallowed 
is reduced to a fit form for assimilation, but a set of mechanical 
and chemical actions responding to the mechanical and 
chemical actions which distinguish the food ? "Whence 
it becomes manifest, that while Life in its simplest form is the 
correspondence of certain inner physico-chemical actions with 
pertain outer physico-chemical actions, each advance to a higher 



b)4 THE RELATIVITY OF ALL KNOWLEDGE. 

form of Life consists in a better preservation of this primary 
correspondence by the establishment of other correspondences. 
Divesting this conception of all superfluities and reducing 
it to its most abstract shape, we see that Life is definable as 
the continuous adjustment of internal relations to external 
relations. And when we so define it, we discover that the 
physical and the psychial life are equally comprehended by 
the definition. We perceive that this which we call Intelli- 
gence, shows itself when the external relations to which the 
internal ones are adjusted, begin to be numerous, complex, and 
remote in time or space ; that every advance in Intelligence 
essentially consists in the establishment of more varied, more 
complete, and more involved adjustments ; and that even the 
highest achievements of science are resolvable into mental rela- 
tions of co-existence and sequence, so co-ordinated as exactly to 
tally with certain relations of co-existence and sequence that 
occur externally. A caterpillar, wandering at random and at 
length finding its way on to a plant having a certain odour, 
begins to eat — has inside of it an organic relation between 
a particular impression and a particular set of actions, answer- 
ing to the relation outside of it, between scent and nutriment. 
The sparrow, guided by the more complex correlation of impres- 
sions which the colour, form, and movements of the caterpillar 
gave it ; and guided also by other correlations which measure 
the position and distance of the caterpillar ; adjusts certain 
correlated muscular movements in such way as to seize the 
caterpillar. Through a much greater distance in space is the 
hawk, holering above, affected by the relations of shape and 
motion which the sparrow presents ; and the much more com- 
plicated and prolonged series of related nervous and muscular 
changes, gone through in correspondence with the sparrow's 
changing relations of position, finally succeed when they are 
precisely adjusted to these changing relations. In the fowler, 
experience has established a relation between the appearance 
and flight of a hawk and the destruction of other birds, includ- 
ing game ; there is also in him an established relation betweor 



THE RELATIVITY OF ALL KNOWLEDGE. 85 

those visual impressions answering to a certain distance in 
space, and the range of his gun; and he has learned, too, 
by frequent observation, what relations of position the 
sights must bear to a point somewhat in advance of the fly- 
ing bird, before he can fire with success. Similarly if we 
go back to the manufacture of the gun. By relations of co- 
existence between colour, density, and place in the earth, a 
particular mineral is known as one which yields iron ; and 
the obtainnient of iron from it, results when certain correlated 
acts of ours, arc adjusted to certain correlated affinities dis- 
played by ironstone, coal, and lime, at a high temperature. If 
we descend yet a step further, and ask a chemist to explain the 
explosion of gunpowder, or apply to a mathematician for a 
theory of projectiles, we still find that special or general rela- 
tions of co-existence and sequence between properties, mo- 
tions, spaces &c, are all they can teach us. And lastly, let it be 
noted that what we call truth, guiding us to successful action 
and the consequent maintenance of life, is simply the accurate 
correspondence of subjective to objective relations ; while error, 
leading to failure and therefore towards death, is the absence 
of such accurate correspondence. 

If, then, Life in all its manifestations, inclusive of Intelli- 
gence in its highest forms, consists in the continuous adjust- 
ment of internal relations to external relations, the necessarily 
relative character of our knowledge becomes obvious. The 
simplest cognition being the establishment of some connexion 
between subjective states, answering to some connexion be- 
tween objective agencies ; and each successively more complex 
cognition being the establishment of some more involved con- 
nexion of such states, answering to some more involved con- 
nexion of such agencies ; it is clear that the process, no matter 
how far it be carried, can never bring within the reach of Intel- 
ligence, either the states themselves or the agencies themselves. 
Ascertaining which things occur along with which, and what 
things follow what, supposing it to be pursued exhaustively, 
must fltill leave us with co-existences and sequences only. If 



86 THE RELATIVITY OF ALL KNOWLEDGE. 

every act of knowing is the formation of a relation in consci- 
ousness parallel to a relation in the environment, then the re- 
lativity of knowledge is self-evident — becomes indeed a truism. 
Thinking being relationing, no thought can ever express more 
than relations. 

And here let us not omit to mark how that to which our 
intelligence is confined, is that with which alone our intelli- 
gence is concerned. The knowledge within our reach, is the 
only knowledge that can be of service to us. This mainten- 
ance of a correspondence between internal actions and exter- 
nal actions, which both constitutes our life at each moment 
and is the means whereby life is continued through subsequent 
moments, merely requires that the agencies acting upon us 
shall be known in their co-existences and sequences, and not 
that they shall be known in themselves. If x and y are two 
uniformly connected properties in some outer object, while a 
and b are the effects they produce in our consciousness ; and 
if while the property x produces in us the indifferent mental 
state a, the property y produces in us the painful mental state 
b (answering to a physical injury) ; then, all that is requisite 
for our guidance, is, that x being the uniform accompaniment 
of y externally, a shall be the uniform accompaniment of b in- 
ternally ; so that when, by the presence of x, a is produced in 
consciousness, b, or rather the idea of b, shall follow it, and 
excite the motions by which the effect of y may be escaped. 
The sole need is that a and b and the relation between them, 
shall always answer to x and y and the relation between them. 
It matters nothing to us if a and b are like x and y or not. 
Could they be exactly identical with them, w r e should not be 
one whit the better off; and their total dissimilarity is no 
disadvantage to us. 

Deep down then in the very nature of Life, the relativity 
rf our knowledge is discernible. . The analysis of vital actions 
in general, leads not only to the conclusion that things in them- 
selves cannot be known to us ; but also to the conclusion thai 
knowledge of them, were it possible, would be useless. 



THE RELATIVITY OF ALL KNOWLEDGE. 87 

§ 20. There still remains the final question — What must 
we say concerning that which transcends knowledge ? Arc 
we to rest wholly in theconsciouscess of phenomena ? — is the 
result of inquiry to exclude utterly from our minds everything 
but the relative ? or must we also believe in something beyond 
the relative ? 

The answer of pure logic is held to be, that by the limits 
of our intelligence we are rigorously confined within the re- 
lative ; and that anything transcending the relative can be 
thought of only as a pure negation, or as a non-existence. 
" The absolute is conceived merely by a negation of conceiva- 
bility," writes Sir 'William. Hamilton. "The Absolute and 
the Infinite" says Mr Mansel, " are thus, like the Inconceiv- 
able and the Imperceptible, names indicating, not an object of 
thought or of consciousness at all, but the mere absence of the 
conditions under which consciousness is possible." From each 
of which extracts may be deduced the conclusion, that since 
reason cannot warrant us in affirming the positive existence 
of what is cognizable only as a negation, we cannot rationally 
affirm the positive existence of anything beyond phenomena. 

Unavoidable as this conclusion seems, it involves, I think, 
a grave erro7\ If the premiss be granted, the inference must 
doubtless be admitted ; but the premiss, in the form presented 
by Sir "William Hamilton and Mr Mansel, is not strictly true. 
Though, in the foregoing pages, the arguments used by these 
writers to show that the Absolute is unknowable, have been 
approvingly quoted ; and though these arguments have been 
enforced by others equally thoroughgoing ; yet there remains 
to be stated a qualification, which saves us from that scepti- 
cism otherwise necessitated. It is not to be denied that so 
long as we confine ourselves to the purely logical aspect of the 
question, the propositions quoted above must be accepted in 
their entirety ; but when we contemplate its more general, or 
psychological, aspect, we find that these propositions arc im- 
perfect statements of the truth : omitting, or rather excluding, 
as they do, an all-important fact. To speak specifically : — ■ 



B8 THE RELATIVITY OF ALL KNOWLEDGE, 

Besides that definite consciousness of which Logic formulates 
the laws, there is also an indefinite consciousness which cannot 
be formulated. Besides complete thoughts, and besides the 
thoughts which though incomplete admit of completion, there 
are thoughts which it is impossible to complete ; and yet which 
are still real, in the sense that they are normal affections of 
the intellect. 

Observe in the first place, that every one of the arguments 
by which the relativity of our knowledge is demonstrated, 
distinctly postulates the positive existence of something be- 
yond the relative. To say that we cannot know the Absolute, 
is', by implication, to affirm that there is an Absolute. In the 
very denial of our power to learn what the Absolute is, there 
lies hidden the assumption that it is ; and the making of 
this assumption proves that the Absolute has been present 
to the mind, not as a nothing, but as a something. Similarly 
with every step in the reasoning by which this doctrine is 
upheld. The JNoumcnon, everywhere named as the antithesis 
of the Phenomenon, is throughout necessarily thought of as 
an actuality. It is rigorously impossible to conceive that our 
knowledge is a knowledge of Appearances only, without at the 
same time conceiving a Heality of which they are appearances ; 
for appearance without reality is unthinkable. Strike out 
from the argument the terms Unconditioned, Infinite, Absolute, 
with their equivalents, and in place of them write, " negation 
of conceivability," or " absence of the conditions under which 
consciousness is possible," and you find that the argument 
becomes nonsense. Truly to realize in thought any on§ of the 
propositions of which the argument consists, the Unconditioned 
must be represented as positive and not negative. How then can 
it be a legitimate conclusion from the argument, that our con- 
sciousness of it is negative ? An argument, the very construc- 
tion of which assigns to a certain term a certain meaning, 
but which ends in showing that this term has no such mean- 
ing, is simply an elaborate suicide. Clearly, then, the very 
demonstration that a definite consciousness of the Absolute 



THE RELATIVITY OF ALL KNOWLEDGE. 80 

16 impossible to us, unavoidably presupposes an indefinite con- 
sciousness of it. 

Perhaps the best way of showing that by the necessary 
conditions of thought, we are obliged to form a positive though 
vague consciousness of this which transcends distinct con- 
sciousness, is to analyze our conception of the antithesis 
between IUlative and Absolute. It is a doctrine called in 
question by none, that such antinomies of thought as Whole 
and Part, Equal and Unequal, Singular and Plural, are 
necessarily conceived as correlatives : the conception of a part 
is impossible without the conception of a whole ; there can 
be no idea of equality without one of inequality. And it is 
admitted that in the same manner, the Relative is itself con- 
ceivable as such, only by opposition to the Irrelative or Abso- 
lute. Sir William Hamilton however, in his trenchant 
(and in most parts unanswerable) criticism on Cousin, contends, 
in conformity with his position above stated, that one of 
these correlatives is nothing whatever beyond the negation of 
the other. " Correlatives " he says " certainly suggest each 
other, but correlatives may, or may not, be equally real and 
positive. In thought contradictories necessarily imply each 
other, for the knowledge of contradictories is one. But the 
reality of one contradictory, so far from guaranteeing the reality 
of the other, is nothing else than its negation. Thus every 
positive notion (the concept of a thing by what it is) suggests 
u negative notion (the concept of a thing by what it is not) ; 
and the highest positive notion, the notion of the conceivable, 
is not without its corresponding negative in the notion of the 
inconceivable. But though these mutually suggest each 
other, the positive alone is real ; the negative is only an ab- 
straction of the other, and in the highest generality, even an 
abstraction of thought itself." Now the assertion 
that of such contradictories " the negative is only an abstrac- 
tion of the other " — " is nothing else than its negation," — is 
not true. In such correlatives as Equal and Unequal, it is 
nhviou3 enough that the negative concept contains something 



90 THE RELATIVITY OF ALL KNOWLEDGE. 

besides the negation of the positive one ; for the things of 
which equality is denied are not abolished from consciousness 
by the denial. And the fact overlooked by Sir William 
Hamilton, is, that the like holds even with those correlatives 
of which the negative is inconceivable, in the strict sense of 
the word. Take for example the Limited and the Unlimited. 
Our notion of the Limited is composed, firstly of a conscious- 
ness of some kind of being, and secondly of a consciousness of 
the limits under which it is known. In the antithetical notion 
of the Unlimited, the consciousness of limits is abolished ; but 
not the consciousness of some kind of being. It is quite truo 
that in the absence of conceived limits, this consciousness ceases 
to be a concept properly so called ; but it is none the less true 
that it remains as a mode of consciousness. If, in such cases, 
the negative contradictory were, as alleged, " nothing else " 
than the negation of the other, and therefore a mere nonen- 
tity, then it would clearly follow that negative contradictories 
could be used interchangeably : the Unlimited might be 
thought of as antithetical to the Divisible ; and the Indivisible 
as antithetical to the Limited. "\Yhile the fact that they 
cannot be so used, proves that in consciousness the Unlimited 
and the Indivisible are qualitatively distinct, and therefore 
positive or real ; since distinction cannot exist between 
nothings. The error, (very naturally fallen into by philo- 
sophers intent on demonstrating the limits and conditions 
of consciousness,) consists in assuming that consciousness con- 
tains nothing but limits and conditions ; to the entire neglect 
of that which is limited and conditioned. It is forgotten 
that there is something which alike forms the raw material 
of definite thought and remains after the deiinitcness which 
tl linking gave to it has been destroyed. Now all 

tins applies by change of terms to the last and highest of 
these antinomies — that between the Relative and the Non- 
relative. We are conscious of the Relative as existence under 
conditions and limits ; it is impossible that these conditions 
and limits can be thought of apart from something to which 



THE RELATIVITY OF ALL KNOWLEDGE. { Jl 

they give the form ; the abstraction of these conditions and 
limits, is, by the hypothesis, the abstraction of them only ; con- 
sequently there must be a residuary consciousness of some- 
thing which filled up their outlines ; and this indefinite some- 
thing constitutes our consciousness of the Non- relative or 
Absolute. Impossible though it is to give to this conscious- 
ness any qualitative or quantitative expression whatever, it is 
not the less certain that it remains with us as a positive and 
indestructible element of thought. 

Still more manifest will this truth become when it is ob- 
served that our conception of the Relative itself disappears, if 
our conception of the Absolute is a pure negation. It is ad- 
mitted, or rather it is contended, by the writers I have quoted 
above, that contradictories can be known only in relation to 
each other — that Equality, for instance, is unthinkable apart 
from its correlative Inequality ; and that thus the Relative can 
itself be conceived only by opposition to the Non-relative. It 
is aleo admitted, or rather contended, that the consciousness of 
a relation implies a consciousness of both the related members. 
If we are required to conceive the relation between the Re- 
lative and Non-relative without being conscious of both, " we 
are in fact " (to quote the words of Mr Mausel differently 
applied) " required to compare that of which we are conscious 
with that of which we are not conscious ; the comparison 
itself being an act of consciousness, and only possible through 
the consciousness of both its objects." What then becomes 
of the assertion that " the Absolute is conceived merely by a 
negation of conceivability," or as " the mere absence of the 
conditions under which consciousness is possible ? " If the Non- 
relative or Absolute, is present in thought only as a mere 
negation, then the relation between it and the Relative be- 
comes unthinkable, because one of the terms of the relation ie 
absent from consciousness. And if this relation is unthink- 
able, then is the Relative itself unthinkable, for want of it- 
antithesis : whence results the disappearance of all thought 
whatever. 



92 THE RELATIVITY OF ALL* KNOWLEDGE. 

Let me here point out that both Sir Wm Hamilton and 
Mr Mansel, do, in other places, distinctly imply that our 
consciousness of the Absolute, indefinite though it is, is 
positive and not negative. The very passage already quoted 
from Sir ¥m Hamilton, in which he asserts that "the 
absolute is conceived merely by a negation of conceivability," 
itself ends with the remark that, " by a wonderful revelation, 
we are thus, in the very consciousness of our inability to con- 
ceive aught above the relative and finite, inspired with a 
belief in the existence of something unconditioned beyond 
the sphere of all comprehensible reality." The last of 
these assertions practically admits that which the other 
denies. By the laws of thought as Sir ¥m Hamilton has 
interpreted them, he finds himself forced to the conclusion 
that our consciousness of the Absolute is a pure negation. 
He nevertheless finds that there does exist in consciousness 
an irresistible conviction of the real " existence of some- 
thing unconditioned." And he gets over the inconsistency 
by speaking of this conviction as " a wonderful revelation " — 
" a belief " with which we are " inspired : " thus apparently 
hinting that it is supernaturally at variance with the laws of 
thought. Mr Mansel is betrayed into a like inconsistency. 
When he says that " we are compelled, by the constitution of 
our minds, to believe in the existence of an Absolute and In- 
finite Being, — a belief which appears forced upon us, as the 
complement of our consciousness of the relative and the 
finite ; " he clearly says by implication that this conscious- 
ness is positive, and not negative. He tacitly admits that 
we are obliged to regard the Absolute as something more 
than a negation — that our consciousness of it is not " the 
mere absence of the conditions under which consciousness is 
possible." 

The supreme importance of this question must be my 
apology for taxing the reader's attention a little further, in 
the hope of clearing up the remaining difficulties. The ne- 
cessarily positive character of our consciousness of the Uncon* 



THE RELATIVITY 0^ ALL KNOWIEDGE. 93 

ditioned, which, as wo have seen, follows from an ultimate 
law of thought, will be better understood on contemplating 
the process of thought. 

One of the arguments used to prove the relativity of 
our knowledge, is, that we cannot conceive Space or Time as 
either limited or unlimited. It is pointed out that when we 
imagine a limit, there simultaneously arises the consciousness 
of a space or time existing beyond the limit. This remoter 
space or time, though not contemplated as definite, is yet con- 
templated as real. Though we do not form of it a conception 
proper, since we do not bring it within bounds, there is yet in 
our minds the unshaped material of a conception. Similarly 
with our consciousness of Cause. "We are no more able to 
form a circumscribed idea of Cause, than of Space or Time ; 
and we are consequently obliged to think of the Cause which 
transcends the limits of our thought as positive though inde- 
finite. Just in the same manner that on conceiving any 
bounded space, there arises a nascent consciousness of space 
outside the bounds ; so, when we think of any definite cause, 
there arises a nascent consciousness of a cause behind it : and 
in the one case as in the other, this nascent consciousness is 
in substance like that which suggests it, though without form. 
The momentum of thought inevitably carries us beyond con- 
ditioned existence to unconditioned existence ; and this ever 
persists in us as the body of a thought to which we can give 
no shape. 

Hence our firm belief in objective reality — a belief which 
metaphysical criticisms cannot for a moment shake. When 
we are taught that a piece of matter, regarded by us as exist- 
ing externally, cannot be really known, but that we can 
know only certain impressions produced on us, we are yet, by 
the relativity of our thought, compelled to think of these in 
relation to a positive cause — the notion of a real existence 
which generated these impressions becomes nascent. If it be 
proved to us that every notion of a real existence which we 
can frame, is utterly inconsistent with itself — that matter, 



y-i THE RELATIVITY OF ALL KNOWLEDGE. 

however conceived by us, cannot be matter as it actually is, 
our conception, though transfigured, is not destroyed : there 
remains the sense of reality, dissociated as far as possible from 
those special forms under which it was before represented in 
thought. Though Philosophy condemns successively each 
attempted conception of the Absolute — though it proves to us 
that the Absolute is not this, nor that, nor that — though in 
obedience to it we negative, one after another, each idea as it 
arises ; yet, as we cannot expel the entire contents of consci- 
ousness, there ever remains behind an element which passes 
into new shapes. The continual negation of each particu- 
lar form and limit, simply results in the more or less com- 
plete abstraction of all forms and limits ; and so ends in an 
indefinite consciousness of the unformed and unlimited. 

And here we come face to face with the ultimate diffi- 
culty — How can there possibly be constituted a consciousness 
of the unformed and unlimited, when, by its very nature, con- 
sciousness is possible only under forms and limits ?. If every 
consciousness of existence is a consciousness of existence as 
conditioned, then how, after the negation of conditions, can 
there be any residuum ?. Though not directly withdrawn by 
the withdrawal of its conditions, must not the raw material of 
consciousness be withdrawn by implication ?. Must it not van- 
ish when the conditions of its existence vanish ? That 
there must be a solution of this difficulty is manifest ; since 
even those who would put it, do, as already shown, admit 
that we have some such consciousness ; and the solution ap- 
pears to be that above shadowed forth. Such consciousness 
is not, and cannot be, constituted by any single mental act ; 
but is the product of many mental acts. In each concept there 
is an element which persists. It is alike impossible for this 
clement to be absent from consciousness, and for it to be pre- 
sent in consciousness alone : either alternative involves un- 
consciousness — the one from the want of the substance ; the 
other from the want of the form. But the persistence of this 
element under successive conditions, necessitates a sense of it as 



THE HELATIVITY OF ALL KNOWLEDGE. 95 

distinguished from the conditions, and independent of them. 
The sense of a something that is conditioned in every thought, 
cannot be got rid of, because the something cannot be got rid of. 
How then must the sense of this something be constituted ? 
Evidently by combining successive concepts deprived of their 
limits and conditions. We form this indefinite thought, as 
we form many of our definite thoughts, by the coalescence of 
a series of thoughts. Let me illustrate this. A large 

complex object, having attributes too numerous to be repre- 
sented at once, is yet tolerably well conceived by the union of 
several representations, each standing for part of its attributes. 
On thinking of a piano, there first rises in imagination its 
visual appearance, to which are instantly added (though by 
separate mental acts) the ideas of its remote side and of its 
solid substance. A complete conception, however, involves the 
strings, the hammers, the dampers, the pedals ; and while 
successively adding these to the conception, the attributes first 
thought of lapse mora or less completely out of consciousness. 
Nevertheless, the whole group constitutes a representation of 
the piano. JSow as- in this case we form a definite concept of 
a special existence, by imposing limits and conditions in suc- 
cessive acts ; so, in the converse case, by taking away the 
limits and conditions in successive acts, we form an indefinite 
notion of general existence. By fusing a series of states of 
consciousness, in each of which, as it arises, the limitations 
and conditions are abolished, there is produced a consciousness 
of something unconditioned. To speak more rigor- 

ously : — this consciousness is not the abstract of any one 
group of thoughts, ideas, or conceptions ; but it is the abstract 
of all thoughts, ideas, or conceptions. That which is common 
to them all, and cannot be got rid of, is what we predicate by 
the word existence. Dissociated as this becomes from each of 
its modes by the perpetual change of those modes, it remains 
as an indefinite consciousness of something constant under 
all modes — of being apart from its appearances. The dis- 
tinction we feel between special and general existence, is the 



96 THE RELATIVITY OF ALL KNOWLEDGE. 

distinction between that which is changeable in us, and that 
which is unchangeable. The contrast between the Absolute 
and the Relative in our minds, is really the contrast between 
that mental element which exists absolutely, and those which 
exist relatively. 

By its very nature, therefore, this ultimate mental element 
is at once necessarily indefinite and necessarily indestructible. 
Our consciousness of the unconditioned being literally the un- 
conditioned consciousness, or raw material of thought to which 
in thinking we give definite forms, it follows that an ever-pre- 
sent sense of real existence is the very basis of our intelligence. 
As we can in successive mental acts get rid of all particular 
conditions and replace them by others, but cannot get rid of 
that undifferentiated substance of consciousness which is con- 
ditioned anew in every thought ; there ever remains with us 
a sense of that which exists persistently and independently of 
conditions. At the same time that by the laws of thought 
we are rigorously prevented from forming a conception of ab- 
solute existence ; we are by the laws of thought equally pre- 
vented from ridding ourselves of the consciousness of absolute 
existence : this consciousness being, as we here see, the obverse 
of our self-consciousness. And since the only possible mea- 
sure of relative validity among our beliefs, is the degree of 
their persistence in opposition to the efforts made to change 
them, it follows that this which persists at all times, under all 
circumstances, and cannot cease until consciousness ceases, has 
the highest validity of any. 

To sum up this somewhat too elaborate argument : — Wo 
have seen how in the very assertion that all our knowledge, 
properly so called, is Relative, there is involved the assertion 
that there exists a Non-relative. We have seen how, in each 
step of the argument by which this doctrine is established, 
the same assumption is made. We have seen how, from tho 
very necessity of thinking in relations, it follows that the 
Relative is itself inconceivable, except as related to a real 
Non-relative. We have seen that unless a real Non-relative 



HIE RELATIVITY OF ALL KNOWLEDGE. 97 

or Absolute be postulated, the Relative itself becomes abso- 
lute ; and so brings the argument to a contradiction. And on 
contemplating the process of thought, we have equally seen 
how impossible it is to get rid of the consciousness of an 
actuality lying behind appearances ; and how, from this im- 
possibilit} r , results our indestructible belief in that actuality. 



CHAPTEE V. 



THE RECONCILIATION. 



§ 27. Thus do all lines of argument converge to the same 
conclusion. The inference reached a priori, in the last chapter, 
confirms the inferences which, in the two preceding chapters, 
were reached a posteriori. Those imbecilities of the under- 
standing that disclose themselves when we try to answer the 
highest questions of objective science, subjective science proves 
to be necessitated by the laws of that understanding. ~Wo not 
only learn by the frustration of all our efforts, that the reality 
underlying appearances is totally and for ever inconceivable 
by us ; but we also learn why, from the very nature of our 
intelligence, it must be so. Finally we discover that this 
conclusion, which, in its unqualified form, seems opposed to 
the instinctive convictions of mankind, falls into harmony 
with them when the missing qualification is supplied. 
Though the Absolute cannot in any manner or degree be 
known, in the strict sense of knowing, yet we find that its po- 
sitive existence is a necessary datum of consciousness ; that so 
long as consciousness continues, we cannot for an instant rid 
it of this datum ; and that thus the belief which this datum 
constitutes, has a higher warrant than any other whatever. 

Here then is that basis of agreement we set out to seek. 
This conclusion which objective science illustrates, and sub- 
jective science shows to be unavoidable, — this conclusion 
which, while it in the main expresses the doctrine of the Eng- 



THE RECONCILIATION. 99 

Iisb. school of philosophy, recognizes also a soul of truth in the 
doctrine of the antagonist German school — this conclusion 
which brings the results of speculation into harmony with those 
of common sense ; is also the conclusion which reconciles Reli- 
gion with Science. Common Sense asserts the existence of a 
reality ; Objective Science proves that this reality cannot be 
what we think it ; Subjective Science shows why we cannot 
think of it as it is, and yet are compelled to think of it as ex- 
isting ; and in this assertion of a Reality utterly inscrutable 
in nature, Religion finds an assertion essentially coinciding 
with her own. We are obliged to regard every phenomenon 
as a manifestation of some Power by which we are acted upon; 
though Omnipresence is unthinkable, yet, as experience dis- 
closes no bounds to the diffusion of phenomena, we are unable 
to think of limits to the presence of this Power ; while the 
criticisms of Science teach us that this Power is Incompre- 
hensible. And this consciousness of an Incomprehensible 
Power, called Omnipresent from inability to assign its limits, 
is just that consciousness on which Religion dwells. 

To understand fully how real is the reconciliation thus 
reached, it will be needful to look at the respective attitudes 
that Religion and Science have all along maintained towards 
this conclusion. We must observe how, all along, the imper- 
fections of each have been undergoing correction by the other ; 
and how the final out- come of their mutual criticisms, can be 
nothing else than an entire agreement on this deepest and 
widest of all truths. 

§ 28. In Religion let us recognize the high merit that from 
the beginning it has dimly discerned the ultimate verity, and 
has never ceased to insist upon it. In its earliest and crudest 
forms it manifested, however vaguely and inconsistently, an 
intuition forming the germ of this highest belief in which all 
philosophies finally unite. The consciousness of a mystery 
is traceable in the rudest fetishism. Each higher religious 
creed, rejecting those definite and simple interpretations of 



100 THE RECONCILIATION. 

.Nature previously given, has become more religious by doing 
this. As the quite concrete and conceivable agencies alleged 
as the causes of things, have been replaced by agencies less 
concrete and conceivable, the element of mystery has of ne- 
cessity become more predominant. Through all its successive 
phases the disappearance of those positive dogmas by which 
the mystery was made unmysterious, has formed the essential 
change delineated in religious history. And so Religion has 
ever been approximating towards that complete recognition of 
this mystery which is its goal. 

For its essentially valid belief, Religion has constantly done 
battle. Gross as were the disguises under which it first 
espoused this belief, and cherishing this belief, though it still 
is, under disfiguring vestments, it has never ceased to main- 
tain and defend it. It has everywhere established and pro- 
pagated one or other modification of the doctrine that all things 
are manifestations of a Power that transcends our knowledge. 
Though from age to age, Science has continually defeated it 
wherever they have come in collision, and has obliged it to 
relinquish one or more of its positions ; it has still held the 
remaining ones with undiminished tenacity. ]STo exposure of 
the logical inconsistency of its conclusions — no proof that each 
of its particular dogmas was absurd, has been able to weaken 
its allegiance to that ultimate verity for which it stands. 
After criticism has abolished all its arguments and reduced it 
to silence, there has still remained with it the indestructible 
consciousness of a truth which, however faulty the mode in 
which it had been expressed, was yet a truth beyond cavil. 
To this conviction its adherence has been substantially sincere. 
And for the guardianship and diffusion of it, Humanity has 
ever been, and must ever be, -its debtor. 

But while from the beginning, Religion has had the all- 
essential office of preventing men from being wholly absorbed 
in the relative or immediate, and of awakening them to a con- 
sciousness of something beyond it, this office has been but very 
imperfectly discharged. Religion has ever been more or leas 



THE RECONCILIATION. 101 

irreligious; and it continues to be partially irreligious even 
now. In the first place, as implied above, it has all 

along professed to have some knowledge of that which tran- 
scends knowledge ; and has so contradicted its own teachings. 
While with one breath it has asserted that the Cause of aU 
things passes understanding, it has, with the next breath, 
asserted that the Cause of all things possesses such or such 
attributes — can be in so far understood. In the se- 

cond place, while in great part sincere in its fealty to the great 
truth it has had to uphold, it has often been insincere, and 
consequently irreligious, in maintaining the untenable doc- 
trines by which it has obscured this great truth. Each as- 
sertion respecting the nature, acts, or motives of that Power 
which the Universe manifests to us, has been repeatedly called 
in question, and proved to be inconsistent with itself, or with 
accompanying assertions. Yet each of them has been age 
after age insisted on, in spite of a secret consciousness that it 
would not bear examination. Just as though unaware that 
its central position was impregnable, Religion has obstinate- 
ly held every outpost long after it was obviously indefen- 
sible. And this naturally introduces us to the third and 
most serious form of irreligion which Religion has displayed ; 
namely, an imperfect belief in that which it especially professes 
to believe. How truly its central position is impregnable, Re- 
ligion has never adequately realized. In the devoutest faith 
as we habitually see it, there lies hidden an innermost core of 
scepticism ; and it is this scepticism which causes that dread 
of inquiry displayed by Religion when face to face with Science. 
Obliged to abandon one by one the superstitions it once ten- 
aciously held, and daily finding its cherished beliefs more and 
more shaken, Religion shows a secret fear that all things may 
some day be explained ; and thus itself betrays a lurking 
doubt whether that Incomprehensible Cause of which it is 
conscious, is really incomprehensible. 

Of Religion then, we must always remember, that amid its 
many errors and corruptions it has assorted and diffused a 
6 



102 THE RECONCILIATION. 

supreme verity. From the first, tlie recognition of this supreme 
verity, in however imperfect a manner, has been its vital ele- 
ment ; and its various defects, once extreme but gradually dimin- 
ishing, have been so many failures to recognize in full that which 
it recognized in part. The truly religious element of Religion 
has always been good ; that which has proved untenable in 
doctrine and vicious in practice, has been its irreligious ele- 
ment ; and from this it has been ever undergoing purification. 

§ 29. And now observe that all along, the agent which has 
effected the purification has been Science. We habitually 
overlook the fact that this has been one of its functions. 
Religion ignores its immense debt to Science ; and Science is 
scarcely at all conscious how much Religion owes it. Yet it 
is demonstrable that every step by which Religion has pro- 
gressed from its first low conception to the comparatively 
high one it has now reached, Science has helped it, or rather 
forced it, to take ; and that even now, Science is urging fur- 
ther steps in the same direction. 

Using the word Science in its true sense, as comprehending all 
positive and definite knowledge of the order existing among 
surrounding phenomena, it becomes manifest that from the 
outset, the discovery of an established order has modified that 
conception of disorder, or undetermined order, which under- 
lies every superstition. As fast as experience proves that 
certain familiar changes always happen in the same sequence, 
there begins to fade from the mind the conception of a special 
personality to whose variable will they were before ascribed. 
And when, step by step, accumulating observations do the like 
with the less familiar changes, a similar modification of 
belief takes place with respect to them. 

AVhile this process seems to those who effect, and those 
who undergo it, an anti-religious one, it is really the reverse. 
Instead of the specific comprehensible agency before assigned, 
there is substituted a less specific and less comprehensible 
agency ; and though this, standing in opposition to the pre- 



THE RECONCILIATION. 103 

vious one, cannot at first call forth the same feeling, yet, as 
being less comprehensible, it mnst eventually call forth this 
feeling more fully. Take an instance. Of old the Sun 

was regarded as the chariot of a god, drawn by horses. How 
far the idea thus grossly expressed, was idealized, we need not 
inquire. It suffices to remark that this accounting for the 
apparent motion of the Sun by an agency like certain visible 
terrestrial agencies, reduced a daily wonder to the level of the 
commonest intellect. "When, many centuries after, Kepler dis- 
covered that the planets moved round the Sun in ellipses and 
described equal areas in equal times, he concluded that in 
each planet there must exist a spirit to guide its movements. 
Here we see that with the progress of Science, there had dis- 
appeared the idea of a gross mechanical traction, such as was 
first assigned in the case of the Sun ; but that while for this 
there was substituted an indefinite and less-easily conceivable 
force, it was still thought needful to assume a special personal 
agent as a cause of the regular irregularity of motion. When, 
finally, it was proved that these planetary revolutions with 
all their variations ' and disturbances, conformed to one uni- 
versal law — when the presiding spirits which Kepler con- 
ceived were set aside, and the force of gravitation put in their 
place ; the change was really the abolition of an imaginable 
agency, and the substitution of an unimaginable one. For 
though the law of gravitation is within our mental grasp, it 
is impossible to realize in thought the force of gravitation. 
Xewton himself confessed the force of gravitation to be in- 
comprehensible without the intermediation of an ether ; and, 
as we have already seen, (§ 18,) the assumption of an ether 
does not in the least help us. Thus it is with 

nee in general. Its progress in grouping particular 
relations of phenomena under laws, and these special laws 
under laws more and more general, is of necessity a pro- 
gress to causes that are more and more abstract. And 
causes more and more abstract, are of necessity causes less 
and less conceivable ; since the formation of an abstract 



104 THE RECONCILIATION. 

conception involves the dropping of certain concrete elements 
of thought. Hence the most abstract conception, to which 
Science is ever slowly approaching, is one that merges into 
the inconceivable or unthinkable, by the dropping of all con- 
crete elements of thought. And so is justified the assertion, 
that the beliefs which Science has forced upon Religion, have 
been intrinsically more religious than those which they sup- 
planted. 

Science however, like Religion, has but very incompletely 
fulfilled its office. As Religion has fallen short of its function 
in so far as it has been irreligious ; so has Science fallen short 
of its function in so far as it has been unscientific. Let us 
note the several parallelisms. In its earlier stages, 

Science, while it began to teach the constant relations of 
phenomena, and so discredited the belief in separate per- 
sonalities as the causes of them, itself substituted the belief 
in causal agencies which, if not personal, were yet concrete. * 
When certain facts were said to show " Nature's abhorrence 
of a vacuum, " when the properties of gold were explained as 
due to some entity called " aureity," and when the phenomena 
of life were attributed to " a vital principle ; " there was set 
up a mode of interpreting the facts, which, while antagonistic 
(o the religious mode, because assigning other agencies, was 
also unscientific, because it professed to know that about 
which nothing was known. Having abandoned these meta- 
physical agencies— having seen that they were not inde- 
pendent existences, but merely special combinations of general 
causes, Science has more recently ascribed extensive groups 
of phenomena to electricity, chemical affinity, and other like 
general powers. But in speaking of these as ultimate and 
independent entities, Science has preserved substantially 
the same attitude as before. Accounting thus for all phe- 
nomena, those of Life and Thought included, it has not only 
maintained its seeming antagonism to Religion, by alleging 
agencies of a radically unlike kind ; but, in so far as it has 
tacitly assumed a knowledge of these agencies, it has continued 



THE RECONCILIATION. 105 

unscientific. At the present time, however, the most advanced 
men of science are abandoning these later conceptions, as 
their predecessors abandoned the earlier ones. Magnetism, 
heat, light &c, which were awhile since spoken of as so 
many distinct imponderables, physicists are now beginning 
to regard as different modes of manifestation of some one 
universal force ; and in so doing are ceasing to think of 
this force as comprehensible. In each phase of its 

progress, Science has thus stopped short with superficial 
solutions — has unscientifically neglected to ask what was 
the nature of the agents it so familiarly invoked. Though 
in each succeeding phase it has gone a little deeper, and 
merged its supposed agents in more general and abstract 
ones, it has still, as before, rested content with these as 
if they were ascertained realities. And this, which has 
all along been the unscientific characteristic of Science, has 
all along been a part cause of its conflict with Religion. 

§ 30. We see then that from the first, the faults of both 
Religion and Science have been the faults of imperfect de- 
velopment.. Originally a mere rudiment, each has been 
growing into a more complete form ; the vice of each has in 
all times been its incompleteness ; the disagreements between 
them have throughout been nothing more than the con- 
sequences of their incompleteness ; and as they reach their 
final forms, they come into entire harmony. 

The progress of intelligence has throughout been dual. 
Though it has not seemed so to those who made it, every step 
in advance has been a step towards both the natural and the 
supernatural. The better interpretation of each phenomenon 
has been, on the one hand, the rejection of a cause that was 
relatively conceivable in its nature but unknown in the order 
of its actions, and, on the other hand, the adoption of a cause 
that was known in the order of its actions but relatively in- 
conceivable in its nature. The first advance out of universal 
fetishism, manifestly involved the conception of agencies lesa 



106 THE RECONCILIATION 

assimilable to the familiar agencies of men and animals, and 
therefore less understood ; while, at the same time, such newly- 
conceived agencies in so far as they were distinguished by 
their uniform effects, were better understood than those they 
replaced. All subsequent advances display the same double 
result. Every deeper and more general power arrived at as 
a cause of phenomena, has been at once less comprehensible 
than the special ones it superseded, in the sense of being less 
definitely representable in thought ; while it has been more 
comprehensible in the sense that its actions have been more 
completely predicable. The progress has thus been as much 
towards the establishment of a positively unknown as towards 
the establishment of a positively known. Though as know- 
ledge approaches its culmination, every unaccountable and 
seemingly supernatural fact, is brought into the category of 
facts that are accountable or natural ; yet, at the same time, 
all accountable or natural facts are proved to be in their ulti- 
mate genesis unaccountable and supernatural. And so there 
arise two antithetical states of mind, answering to the op- 
posite sides of that existence about which we think. "While 
our consciousness of Nature under the one aspect constitutes 
Science, our consciousness of it under the other aspect con- 
stitutes Religion. 

Otherwise contemplating the facts, we may say that Reli- 
gion and Science have been undergoing a slow differentiation ; 
and that their ceaseless conflicts have been due to the imper- 
fect separation of their spheres and functions. Religion has, 
from the first, struggled to unite more or less science with its 
nescience ; Science has, from the first, kept hold of more or 
less nescience as though it were a part of science. Each has 
been obliged gradually to relinquish that territory which it 
wrongly claimed, while it has gained from the other that to which 
It had a right ; and the antagonism between them has bewa 
an inevitable accompaniment of this process. A more specific 
statement will make this clear. Religion, though at 

the outset it asserted a mystery, also made numerous definite 



THE RECONCILIATION. 107 

assertions respecting this mystery — professed to know its na- 
ture in the minutest detail ; and in so far as it claimed posi- 
tive knowledge, it trespassed upon the province of Science. 
From the times of early mythologies, when such intimate ac- 
quaintance with the mystery was alleged, down to our own 
days, when but a few abstract and vague propositions are 
maintained, Religion has been compelled by Science to give 
up one after another of its dogmas — of those assumed cogni- 
tions which it could not substantiate. In the mean time, 
Science substituted for the personalities to which Religion 
ascribed phenomena, certain metaphysical entities ; and in 
doing this it trespassed on the province of Religion ; since it 
classed among the things which it comprehended, certain 
forms of the incomprehensible. Partly by the criticisms of 
Religion, which has occasionally called in question its assump- 
tions, and partly as a consequence of spontaneous growth, 
Science has been obliged to abandon these attempts to include 
within the boundaries of knowledge that which cannot be 
known ; and has so yielded up to Religion that which of 
right belonged to it. So long as this process of 

differentiation is incomplete, more or less of antagonism 
must continue. Gradually as the limits of possible cognition 
are established, the causes of conflict will diminish. And 
a permanent peace will be reached when Science becomes 
fully convinced that its explanations are proximate and re- 
lative ; while Religion becomes fully convinced that the 
mystery it contemplates is ultimate and absolute. 

Religion and Science are therefore necessary correlatives. 
As already hinted, they stand respectively for those two anti- 
thetical modes of consciousness which cannot exist asunder. 
A known cannot be thought of apart from an unknown ; nor 
can an unknown be thought of apart from a known. And by 
consequence neither can become more distinct without giving 
greater distinctness to the other. To carry further a meta- 
phor before used, — they are the positive and negative poles of 



108 THE RECONCILIATION. 

thought ; of which neither can gain in intensity without in* 
creasing the intensity of the other. 

§ 31. Thus the consciousness of an Inscrutable Power mani- 
fested to us through all phenomena, has been growing ever 
clearer ; and must eventually be freed from its imperfections. 
The certainty that on the one hand such a Power exists, while 
on the other hand its nature transcends intuition and is be- 
yond imagination, is the certainty towards which intelligence 
has from the first been progressing. To this conclusion 
Science inevitably arrives as it reaches its confines ; while to 
this conclusion. Peligion is irresistibly driven, by criticism. 
And satisfying as it does the demands of the most rigorous 
logic at the same time that it gives the religious sentiment 
the widest possible sphere of action, it is the conclusion we 
are bound to accept without reserve or qualification. 

Some do indeed allege that. though the Ultimate Cause of 
things cannot really be thought of by us as having specified 
attributes, it is yet incumbent upon us to assert these attri- 
butes. Though the forms of our consciousness are such that 
the Absolute cannot in any manner or degree be brought 
within them, we are nevertheless told that we must represent 
the Absolute to ourselves under these forms. As writes Mr 
Mansel, in the work from which I have already quoted largely 
— " It is our duty, then, to think of God as personal ; and it 
is our duty to believe that He is infinite." 

That this is not the conclusion here adopted, needs hardly 
be said. If there be any meaning in the foregoing argu- 
ments, duty requires us neither to affirm nor deny personality. 
Our duty is to submit ourselves with all hiunility to the 
established limits of our intelligence ; and not perversely to 
rebel against them. Let those who can, believe that there is 
eternal war set between our intellectual faculties and our mo- 
ral obligations. I for one, admit no such radical vice in the 
constitution of things. 



THE RECONCILIATION. 109 

This which, to most will seem an essentially irreligious po- 
sition, is an essentially religions one — nay is the religious one, 
to which, as already shown, all others are but approximations. 
In the estimate it implies of the Ultimate Cause, it does not 
fall short of the alternative position, but exceeds it. Those 
who espouse this alternative position, make the erroneous as= 
sumption that the choice is between personality and some. 
tiling lower than personality; whereas the choice is rather 
between personality and something higher. Is it not just 
possible that there is a mode of being as much transcending 
Intelligence and Will, as these transcend mechanical motion ? 
It is true that we are totally unable to conceive any such 
higher mode of being. But this is not a reason for question- 
in p- its existence ; it is rather the reverse. Have we not seen 
how utterly incompetent our minds are to form even an ap- 
proach to a conception of that which underlies all phe- 
nomena ? Is it not proved that this incompetency is the incom- 
petency of the Conditioned to grasp the Unconditioned ? Does 
it not follow that the Ultimate Cause cannot in any respect be 
conceived by us because it is in every respect greater than can 
be conceived ? And may we not therefore rightly refrain 
from assigning to it any attributes whatever, on the ground 
that such attributes, derived as they must be from our own 
natures, are not elevations but degradations ? Indeed it seems 
somewhat strange that men should suppose the highest wor- 
ship to lie in assimilating the object of their worship to them- 
selves. Not in asserting a transcendant difference, but in as- 
serting a certain likeness, consists the element of their creed 
which they think essential. It is true that from the time 
when the rudest savages imagined the causes of all things to 
be creatures of flesh and blood like themselves, down to our 
own time, the degree of assumed likeness has been diminishing. 
But though a bodily form and substance similar to that of man, 
has long since ceased, among cultivated races, to be a literally- 
conceived attribute of the Ultimate Cause — though the grosser 
human desires have been also rejected as unfit elements of the 



110 THE RECONCILIATION. 

conception — though there is some hesitation in ascribing even 
the higher human feelings, save in greatly idealized shapes ; 
yet it is still thought not only proper, but imperative, to 
ascribe the most abstract qualities of our nature. To think of 
the Creative Power as in all respects anthropomorphous, is now 
considered impious by men who yet hold themselves bound to 
think of the Creative Power as in some respects anthropomor- 
phous ; and who do not see that the one proceeding is but an 
evanescent form of the other. And then, most marvellous of 
all, this course is persisted in even by those who contend that 
we are wholly unable to frame any conception whatever of 
the Creative Power. After it has been shown that every sup- 
position respecting the genesis of the Universe commits us to 
alternative impossibilities of thought — after it has been 
shown that each attempt to cdnceive real existence ends in an 
intellectual suicide — after it has been shown why, by the very 
constitution of our minds, we are eternally debarred from 
thinking of the Absolute ; it is still asserted that we ought 
to think of the Absolute thus and thus. In all imaginable 
ways we find thrust upon us the truth, 'that we are not per- 
mitted to know — nay are not even permitted to conceive — 
that Reality which is behind the veil of Appearance ; and 
yet it is said to be our duty to believe (and in so far to con- 
ceive) that this Reality exists in a certain defined manner. 
Shall we call this reverence ? or shall we call it the reverse ? 
Volumes might be written upon the impiety of the pious. 
Through the printed and spoken thoughts of religious teachers, 
may almost everywhere be traced a professed familiarity with 
the ultimate mystery of things, which, to say the least of it, 
seems anything but congruous with the accompanying expres- 
sions of humility. And surprisingly enough, those tenets which 
most clearly display this familiarity, are those insisted upon 
as forming the vital elements of religious belief. The attitude 
thus assumed, can be fitly represented only by further develop- 
ing a simile long current in theological controversias — the 
simile of the watch. If for a moment we made the grotesque 



THE RECONCILIATION. ill 

supposition that the tickings and other movements of a watch 
constituted a kind of consciousness ; and that a watch porsessed 
of such a consciousness, insisted on regarding the watchmaker's 
actions as determined like its own by springs and escapements ; 
we should simply complete a parallel of which religious 
teachers think much. And were we to suppose that a watch 
not only formulated the cause of its existence in these 
mechanical terras, but held that watches were bound out of 
reverence so to formulate this cause, and even vituperated, as 
atheistic watches, any that did not venture so to formulate it ; 
we should merely illustrate the presumption of theologians by 
carrying their own argument a step further. A few 

extracts will bring home to the reader the justice of this 
comparison. "We are told, for example, by one of high 
repute among religious thinkers, that the Universe is "the 
manifestation and abode of a Free Mind, like our own ; em- 
bodying His personal thought in its adjustments, realizing 
His own ideal in its phenomena, just as we express our inner 
faculty and character through the natural language of an ex- 
ternal life. In this view, we interpret Nature by Humanity ; 
we find the key to her aspects in such purposes and affections 
as our own consciousness enables us to conceive ; we look 
everj^where for physical signals of an ever-living Will ; and 
decipher the universe as the autobiography of an Infinite 
Spirit, repeating itself in miniature within our Finite Spirit." 
The same writer goes still further. He not only thus parallels 
the assimilation of the watchmaker to the watch, — he not only 
thinks the created can " decipher " " the autobiography " of 
the Creating ; but he asserts that the necessary limits of the 
one are necessary limits of the other. The primary qualities 
of bodies, he says, " belong eternally to 1 he material datum ob- 
jective to God " and control his acts ; while the secondary 
ones arc " products of pure Inventive Reason and Determining 
Will" — constitute "the realm of Divine originality." * * * 
" While on this Secondary field His Mind and ours arc thus 
contrasted, they meet in resemblance again upon the Primary: 



112 THE RECONCILIATION. 

for tlic evolutions of deductive Reason there is but one track 
possible to all intelligences ; no merum arbitrium can inter- 
change the false and true, or make more than one geometry, 
one scheme of pure Physics, for all worlds ; and the Omnipo- 
tent Architect Himself, in realizing the Kosmical conception, 
in shaping the orbits out of immensity and determining seasons 
out of eternity, could but follow the laws of curvature, mea- 
sure and proportion." That is to say, the Ultimate Cause is like 
a human mechanic, not only as "shaping" the "material datum 
objective to " Him, but also as being obliged to conform to 
the necessary properties of that datum." Nor is this all. 
There follows some account of " the Divine psychology," to 
the extent of saying that " we learn " " the character of God 
— the order of affections in Him " from " the distribution of 
authority in the hierarchy of our impulses." In other words, 
it is alleged that the Ultimate Cause has desires that are to be 
classed as higher and lower like our own.* Every 

one has heard of the king who wished he had been present at 
the creation of the world, that he might have given good ad- 
vice. He was humble however compared with those who pro- 
fess to understand not only the relation of the Creating to the 
created, but also how the Creating is constituted. And yet 
this transcendent audacity, which claims to penetrate the 
secrets of the Power manifested to us through all existence — 
nay even to stand behind that Power and note the conditions 
to its action— this it is which passes current as piety ! May 
we not without hesitation affirm that a sincere recognition of 
the truth that our own and all other existence is a mystery 
absolutely and for ever beyond our comprehension, contains 
more of true religion than all the dogmatic theology ever 
written r 

Meanwhile let us recognize whatever of permanent good 
there is in these persistent attempts to frame conceptions of 
that which cannot be conceived. Prom the beginning it has 

* These extracts are from an article entitled "Nature and God," published in 
the National Review for October, 1860. 



THE RECONCILIATION. I I'd 

been only through the successive failures of such conceptions 
to satisfy the mind, that higher and higher ones have been 
gradually reached ; and doubtless, the conceptions now current 
are indispensable as transitional modes of thought. Even 
more than this may be willingly conceded. It is possible, 
nay probable, that under their most abstract forms, ideas of 
this order will always continue to occupy the background of 
our consciousness. Yery likely there will ever remain a need 
to give shape to that indefinite sense of an Ultimate Existence, 
which forms the basis of our intelligence. We shall always 
be under the necessity of contemplating it as some mode of be- 
ing ; that is — of representing it to ourselves in some form of 
thought, however vague. And we shall not err in doing this 
so long as we treat every notion we thus frame as merely a 
symbol, utterly without resemblance to that for which it 
stands. Perhaps the constant formation of such symbols and 
constant rejection of them as inadequate, may be hereafter, 
as it has hitherto been, a means of discipline. Perpetually to 
construct ideas requiring the utmost stretch of our faculties, 
and perpetually to find that such ideas must be abandoned as 
futile imaginations, may realize to us more fully than any other 
course, the greatness of that which we vainly strive to grasp. 
Such efforts and failures may serve to maintain in our minds 
a due sense of the incommensurable difference between the 
Conditioned and the Unconditioned. By continually seeking 
to know and being continually thrown back with a deepened 
conviction of the impossibility of knowing, we may keep alive 
the consciousness that it is alike our highest wisdom and our 
highest duty to regard that through which all things exist as 
The Unknowable. 

§ 32. An immense majority will refuse with more or less of 
indignation, a belief seeming to them so shadowy and indefinite. 
Having always embodied the Ultimate Cause so far as was 
needful to its mental realization, they must necessarily resent 
the substitution of an Ultimate Cause which cannot be men- 



114 THE RECONCILIATION. 

tally realized at all. " You offer us," they say, " an unthink- 
able abstraction in place of a Being towards whom we may 
entertain definite feelings. Though we are told that the Ab- 
solute is real, yet since we are not allowed to conceive it, it 
might as well be a pure negation. Instead of a Power which 
we can regard as haying some sympathy with us, you would 
have us contemplate a Power to which no emotion whatever 
can be ascribed. And so we are to be deprived of the very 
substance of our faith." 

This land of protest of necessity accompanies every change 
from a lower creed to a higher. The belief in a community 
of nature between himself and the object of his worship, has 
always been to man a satisfactory one ; and he has always 
accepted with reluctance those successively less concrete con- 
ceptions which have been forced upon him. Doubtless, in all 
times and places, it has consoled the barbarian to think of his 
deities as so exactly like himself in nature, that they could be 
bribed by offerings of food ; and the assurance that deities 
could not be so propitfated, must have been repugnant, be- 
cause it deprived him of an easy method of gaining super- 
natural protection. To the Greeks it was manifestly a source 
of comfort that on occasions of difficulty they could obtain, 
through oracles, the advice of their gods, — nay, might even 
get the personal aid of their gods in battle ; and it was pro- 
bably a very genuine anger which they visited upon philo- 
sophers who called in question these gross ideas of their my- 
thology. A religion which teaches the Hindoo that it is 
impossible to purchase eternal happiness by placing himself 
under the wheel of Juggernaut, can scarcely fail to seem a 
cruel one to him; since it deprives him of the pleasurable 
consciousness that he can at will exchange miseries for joys. 
Nor is it less clear that to our Catholic ancestors, the beliefs 
that crimes could be compounded for by the building of 
churches, that their own punishments and those of their re- 
latives could be abridged by the saying of masses, and that 
divine aid or forgiveness might be gained through the inter- 



THE RECONCILIATION. lift 

cession of saints, were highly solacing ones ; and that Pro- 
testantism, in substituting the conception of a God so com- 
paratively unlike ourselves as not to be influenced by such 
methods, must have appeared to them hard and cold. 
Naturally, therefore, we must expect a further step in the 
same direction to meet with, a similar resistance from outraged 
sentiments. No mental revolution can be accomplished 

without more or less of laceration. Be it a change of habit or 
a change of conviction, it must, if the habit or conviction be 
strong, do violence to some of the feelings ; and these must 
of course oppose it. For long- experienced, and therefore 
definite, sources of satisfaction, have to be substituted sources 
of satisfaction that have not been experienced, and are 
therefore indefinite. That which, is relatively well known 
and real, has to be given up for that which is relatively 
unknown and ideal. And of course such an exchange cannot 
be made without a conflict involving pain. Espe- 

cially then must there arise a strong antagonism to 
any alteration in so deep and vital a conception as that 
with which we are here dealing. Undertying, as this 
conception does, all others, a modification of it threatens to 
reduce the superstructure to ruins. Or to change the 
metaphor — being the root with which are connected our 
ideas of goodness, rectitude, or duty, it appears impossible 
that it should be transformed without causing these to 
wither away and die. The whole higher part of the nature 
almost of necessity takes up arms against a change which, by 
destroying the established associations of thought, seems 
to eradicate morality. 

This is by no means all that has to be said for such pro- 
tests. There is a much deeper meaning in them. They do 
not simply express the natural repugnance to a revolution of 
belief, here made specially intense by the vital importance of 
the belief to be revolutionized ; but they also express an 
instinctive adhesion to a belief that is in one sense the best 
— the best for those who thus cling to it, though not atv 



116 1I1E RECONCILIATION. 

stractedly tlie best. For here let me remark that 

what were above spoken of as the imperfections of Religion, 
at first great but gradually diminishing, have been imperfec- 
tions only as measured by an absolute standard ; and not as 
measured by a relative one. Speaking generally, the religion 
current in each age and among each people, has been as 
near an approximation to the truth as it was then and there 
possible for men to receive : the more or less concrete forms 
in which it has embodied the truth, have simply been the 
means of making thinkable what would otherwise have been 
unthinkable ; and so have for the time being served to 
increase its impressiveness. If we consider the con- 

ditions of the case, we shall find this to be an unavoidable 
conclusion. During each stage of evolution, men must think 
in such terms of thought as they possess. While all the 
conspicuous changes of which they can observe the origins, 
have men and animals as antecedents, they are unable to 
think of antecedents in general under any other shapes ; and 
hence creative agencies are of necessity conceived by them 
in these shapes. If during this phase, these concrete con- 
ceptions were taken from them, and the attempt made to 
give them comparatively abstract conceptions, the result 
would be to leave their minds with none at all ; since the 
substituted ones could not be mentally represented. Simi- 
larly with every successive stage of religious belief, down to 
the last. Though, as accumulating experiences slowly mo- 
dify the earliest ideas of causal personalities, there grow up 
more general and vague ideas of them ; yet these cannot be 
at once replaced by others still more general and vague. 
Further experience's must supply the needful further abstrac- 
tions, before the mental void left bj 7- the destruction of such 
inferior ideas can be filled by ideas of a superior order. And 
it the present time, the refusal to abandon a relatively concrete 
aotion for a relatively abstract one, implies the inability to 
frame the relatively abstract one ; and so proves that the 
change would be premature and injurious. Still 



TKE RECONCILIATION. 117 

mure clearly shall we see the injur iousncss of any such 
premature change, on ohserving that the effects of a belief 
upon conduct must be diminished in proportion as the vivid- 
ness with which it is realized becomes less. Evils and 
benefits akin to those which the savage has personally felt, 
or learned from those who have felt them, are the only evils 
and benefits he can understand ; and these must be looked 
for as coming in ways like those of which he has had ex- 
perience. His deities must be imagined to have like mo- 
tives and passions and methods with the beings around him ; 
for motives and passions and methods of a higher character, 
being unknown to him, and in great measure unthinkable by 
him, cannot be so realized in thought as to influence his 
deeds. During every phase of civilization, the actions ol 
the Unseen Reality, as well as the resulting rewards and 
punishments, being conceivable only in such forms as ex- 
perience furnishes, to supplant them by higher ones before 
wider experiences have made higher ones conceivable, is to 
set up vague and uninfluential motives for definite and in- 
fluential ones. Even now, for the great mass of men, 
unable through lack of culture to trace out with due clear- 
ness those good and bad consequences which conduct brings 
round through the established order of the Unknowable, it is 
needful that there should be vividly depicted future torments 
and future joys — pains and pleasures of a definite kind, produced 
in a manner direct and simple enough to be clearly ima- 
gined. Nay still more must be conceded. Few if any 
are as yet fitted wholly to dispense with such conceptions as are 
current. The highest abstractions take so great a mental power 
to realize with any vividness, and are so inoperative upon con- 
duct unless they are vividly realized, that their regulative ef- 
fects must for a long period to come be appreciable on but a 
small minority. To see clearly how a right or wrong act 
generates consequences, internal and external, that go on 
branching out more widely as years progress, requires a rare 
power of analysis. To mentally represent even a single series 



118 THE RECONCILIATION. 

of these consequences, as it stretches out into the remote future, 
requires an equally rare power of imagination. And to esti- 
mate these consequences in their totality, ever multiplying in 
number while diminishing in intensity, requires a grasp of 
thought possessed by none. Yet it is only by such analysis, 
such imagination, and such grasp, that conduct can be right- 
ly guided in the absence of all other control : only so can ul- 
timate rewards and penalties be made to outweigh proximate 
pains and pleasures. Indeed, were it not that throughout the 
progress of the race, men's experiences of the effects of conduct 
have been slowly generalized into principles — were it not that 
these principles have been from generation to generation in- 
sisted on by parents, upheld by public opinion, sanctified by re- 
ligion, and enforced by threats of eternal damnation for dis- 
obedience — were it not that under these potent influences, 
habits have been modified, and the feelings proper to them 
made innate — were it not, in short, that we have been 
rendered in a considerable degree organically moral ; it is 
certain that disastrous results would ensue from the removal 
of those strong and distinct motives which the current belief 
supplies. Even as it is, those who relinquish the faith in 
which they have been brought up, for this most abstract faith 
in which Science and Religion unite, may not uncommonly 
fail to act up to their convictions. Left to their organic mor- 
ality, enforced only by general reasonings imperfectly wrought 
out and difficult to keep before the mind, their defects of 
nature will often come out more strongly than they would 
have done under their previous creed. The substituted creed 
can become adequately operative only when it becomes, like 
the present one, an element in early education, and has the 
>ort of a strong social sanction. Nor will men be quite 
for it until, through the continuance of a discipline 
whlc^i has atf ea&y partially moulded them to the conditions 
of social existence, they are completely moulded to those 
conditions. 

We must therefore recognize the resistance to a change of 



THE RECONCILIATION. 119 

theological opinion, as in great measure salutary. It is not 
simply that strong and deep-rooted feelings are necessarily 
excited to antagonism — it is not simply that the highest moral 
sentiments join in the condemnation of a change which seems 
to undermine their authority ; but it is that a real adaptation 
exists between an established belief and the natures of those 
who defend it ; and that the tenacity of the defence measures 
the completeness of the adaptation. Forms of religion, like forms 
of government, must be fit for those who live under them ; and 
in the one case as in the other, that form which is fittest is that 
for which there is an instinctive preference. As certainly as a 
barbarous race needs a harsh terrestrial rule, and habitually 
shows attachment to a despotism capable of the necessary 
rigour ; so certainly does such a race need a belief in a celes- 
tial rule that is similarly harsh, and habitually shows attach- 
ment to such a belief. And just in the same way that the sud- 
den substitution of free institutions for tyrannical ones, is sure 
to be followed by a reaction ; so, if a creed full of dreadful 
ideal penalties is all at once replaced by one presenting ideal 
penalties that are comparatively gentle, there will inevitably 
be a return to some modification of the old belief. The 

parallelism holds yet further. During those early stages in 
which there is an extreme incongruity between the relatively 
best and the absolutely best, both political and religious changes, 
when at rare intervals they occur, are necessarily violent ; and 
necessarily entail violent retrogressions. But as the incongruity 
between that which is and that which should be, diminishes, the 
changes become more moderate, and are succeeded by more mo- 
derate retrogressions ; until, as these movements and counter- 
movements decrease in amount and increase in frequency. 
they merge into an almost continuous growth. That adhesion 
to old institutions and beliefs, which, in primitive societies, 
opposes an iron barrier to any advance, and which, after the 
barrier has been at length burst through, brings back the in- 
stitutions and beliefs from that too-forward position to which 
the momentum of change had carried them, and so helps to 



120 THE RECONCILIATION. 

rc-adapt social conditions to the popular character — this adhe- 
sion to old institution and beliefs, eventually becomes the con- 
stant check by which the constant advance is prevented from 
being too rapid. This holds true of religious creeds and forms, 
as of civil ones. And so we learn that theological conserva- 
tism, like political conservatism, has an all-important function. 

§ 33. That spirit of toleration which is so marked a charac- 
teristic of modern times, and is daily growing more conspicu- 
ous, has thus a far deeper meaning than is supposed. What 
we commonly regard simply as a due respect for the right of 
private judgment, is really a necessary condition to the bal- 
ancing of the progressive and conservative tendencies — is a 
means of maintaining the adaptation between men's beliefs 
and their natures. It is therefore a spirit to be fostered ; and 
it is a spirit which the catholic thinker, who perceives the func- 
tions of these various conflicting creeds, should above all other 
men display. Doubtless jvhoever feels the greatness 

of the error to which his fellows cling and the greatness of the 
truth which they reject, will find it hard to show a due pa- 
tience. It is hard for him to listen calmly to the futile argu- 
ments used in support of irrational doctrines, and to the mis- 
representation of antagonist doctrines. It is hard for him to 
bear the manifestation of that pride of ignorance which so far 
exceeds the pride of science. Naturally enough such a one 
will be indignant when charged with irreligion because he 
declines to accept the carpenter- theory of creation as the most 
worthy one. He may think it needless as it is difficult, to con- 
ceal his repugnance to a creed which tacitly ascribes to The 
Unknowable a love of adulation such as would be despised in 
a human being. Convinced as he is that all punishment, as 
we see it wrought out in the order of nature, is but a disguised 
beneficence, there will perhaps escape from him an angry con- 
demnation of the belief that punishment is a divine vengeance, 
und that divine vengeance is eternal. lie may be tempted to 
show hi3 contempt when he is told that actions instigated by 



THE RECONCILIATION. 12J 

an unselfish sympathy or by a pure love of rectitude, are 
intrinsically sinful ; and that conduct is truly good only 
when it is due to a faith whose openly-professed motive is 
other- worldliness. But he must restrain such feelings. Though 
he may be unable to do this during the excitement of contro- 
versy, or when otherwise brought face to face with current 
superstitions, he must yet qualify his antagonism in calmer 
moments ; so that his mature judgment and resulting conduct 
may be without bias. 

To this end let him ever bear in mind three cardinal 
facts — two of them already dwelt upon, and one still to be 
pointed out. The first is that with which we set 

out ; namely the existence of a fundamental verity under 
all forms of religion, however degraded. In each of them 
there is a soul of truth. Through the gross body of dogmas 
traditions and rites which contain it, it is always visible — 
dimly or clearly as the case may be. This it is which gives 
vitality even to the rudest creed ; this it is which survives 
every modification ; and this it is which we must not forget 
when condemning the forms under which it is present- 
ed. The second of these cardinal facts, set forth at 
length in the foregoing section, is, that while those concrete 
elements in which each creed embodies this soul of truth, 
are bad as measured by an absolute standard, they are good 
as measured by a relative standard. Though from higher 
perceptions they hide the abstract verity within them ; yet 
to lower perceptions they render this verity more appreciable 
than it would otherwise be. They serve to make real and 
influential over men, that which would else be unreal and unin- 
fluential. Or we may call them the protective envelopes, 
without which the contained truth would die. The 
remaining cardinal fact is, that these various beliefs are 
parts of the constituted order of things ; and not accidental 
but necessary parts. Seeing how one or other of them is 
everywhere present ; is of perennial growth ; and when 
cut down, redevelopes in a form but slightly modified ; we 



122 THE RECONCILIATION. 

cannot avoid the inference that they are needful accompani- 
ments of human life, severally fitted to the societies in 
which they are indigenous. From the highest point of 
view, we must recognize them as elements in that great 
evolution of which the beginning and end are beyond our 
knowledge or conception — as modes of manifestation of The 
Unknowable ; and as having this for their warrant. 

Our toleration therefore should be the widest possible. Or 
rather, we should aim at something beyond toleration, as com- 
monly understood. In dealing with alien beliefs, our endea- 
vour must be, not simply to refrain from injustice of word or 
deed ; but also to do justice by an open recognition of positive 
worth. We must qualify our disagreement with as much as 
may be of sympathy. 

§ 34. These admissions will perhaps be held to imply, that 
the current theology should be passively accepted ; or, at any 
rate, should not be actively opposed. " Why," it may be 
asked, " if all creeds have an average fitness to their times and 
places, should we not rest content with that to which we are 
born ? If the established belief contains an essential truth 
— if the forms under which it presents this truth, though 
intrinsically bad, are extrinsically good — if the abolition of 
these forms would be at present detrimental to the great ma- 
jority — nay, if there are scarcely any to whom the ultimate 
and most abstract belief can furnish an adequate rule of life ; 
surely it is wrong, for the present at least, to ' propagate this 
ultimate and most abstract belief." 

The reply is, that though existing religious ideas and in- 
stitutions have an average adaptation to the characters of the 
people who live under them ; yet, as these characters are ever 
changing, the adaptation is ever becoming imperfect ; and the 
ideas and institutions need remodelling with a frequency pro- 
portionate to the rapidity of the change. Hence, while it is 
requisite that free play should be given to conservative thought 
and action, progressive thought and action must also have free 



THE RECONCILIATION. 123 

play. \Yithout tlie agency of both, there cannot be those con- 
tinual re-adaptations which orderly progress demands. 

"Whoever hesitates to utter that which he thinks the high- 
est truth, lest it should be too much in advance of the time, 
may reassure himself by looking at his acts from an imper- 
sonal point of view. Let him duly realize the fact that opin- 
ion is the agency through which character adapts external 
arrangements to itself — that his opinion rightly forms part of 
this agency — is a unit of force, constituting, with other such 
units, the general power which works out social changes ; and 
he will perceive that he may properly give full utterance to 
his innermost conviction : leaving it to produce what effect it 
may. It is not for nothing that he has in him these sympa- 
thies with some principles and repugnance to others. He, 
with all his capacities, and aspirations, and beliefs, is not an 
accident, but a product of the time. He must remember that 
while he is a descendant of the past, he is a parent of the fu- 
ture ; and that his thoughts are as children born to him, 
which he niay not carelessly let die. He, like every other 
man, may properly consider himself as one of the myriad 
agencies through whom works the Unknown Cause ; and 
when the Unknown Cause produces in him a certain belief, 
he is thereby authorized to profess and act out that belief. 
For, to render in their highest sense the words of the poet — 

Xature is made better by no mean, 

But nature makes that mean : over that art 
Which you say adds to nature, is an art 
That nature makes. 

Not as adventitious therefore will the wise man regard the 
faith which is in him. The highest truth he sees he will 
fearlessly utter ; knowing that, let what may come of it, he is 
thus playing his right part in the world — knowing that if he 
can effect the change he aims at — well : if not — well also , 
though not so welL 



PART II 



THE ENOWABLE. 



CHAPTER I. 

PHILOSOPHY DEFINED. 

§ 35. After concluding that we cannot know the ulti- 
mate nature of that which is manifested to us, there arise 
the questions — What is it that we know ? In what sense 
do we know it ? And in what consists our highest knowledge 
of it ? Having repudiated as impossible the Philosophy 
which professes to formulate Being as distinguished from 
Appearance, it becomes needful to say what Philosophy 
truly is — not simply to specify its limits, but to specify its 
character within those limits. Given a certain sphere as the 
sphere to which human intelligence is restricted, and there 
remains to define the peculiar product of human intelli- 
gence which may still be called Philosophy. 

In doing this, we may advantageously avail ourselves of 
the method followed at the outset, of separating from con- 
ceptions that are partially or mainly erroneous, the element 
of truth they contain. As in the chapter on " Religion and 
Science," it was inferred that religious beliefs, wrong as 
they might individually be in their particular forms, never- 
theless probably each contained an essential verity, and that 
this was most likely common to them all ; so in this place it 
is to be inferred that past and present beliefs respecting the 
nature of Philosophy, are none of them wholly false, and 
that that in which they are true is that in which they agree. 
We have here, then, to do what was done there — " to com- 
pare all opinions of the same genus ; to set aside as more or 



128 pniLOSoniY defined. 

less discrediting one another those various special and con- 
crete elements in which such opinions disagree ; to observe 
what remains after the discordant constituents have been 
eliminated ; and to find for this remaining constituent that 
abstract expression which holds true throughout its diver- 
gent modifications." 

§ 36. Earlier speculations being passed over, we see 
that among the Greeks, before there had arisen any notion 
of Philosophy in general, apart from particular forms of 
Philosophy, the particular forms of it from which the 
general notion was to arise, were hypotheses respecting 
some universal principle that constituted the essence of all 
concrete kinds of being. To the question — " What is that 
invariable existence of which these are variable states ?" 
there were sundry answers — Water, Air, Fire. A class 
of hypotheses of this all-embracing character having been 
propounded, it became possible for Pythagoras to conceive 
of Philosophy in the abstract, as knowledge the most remote 
from practical ends ; and to. define it as " knowledge of im- 
material and eternal things : " " the cause of the material 
existence of things/' being, in his view, Number. There- 
after, we find continued a pursuit of Philosophy as some 
ultimate interpretation of the Universe, assumed to be pos- 
sible, whether actually reached in any case or not. And in 
the course of this pursuit, various such ultimate interpreta- 
tions were given as that " One is the beginning of all 
things ," that " the One is God ;" that " the One is Finite f 
that " the One is Infinite ;" that " Intelligence is the govern- 
ing principle of things ; " and so on. From all which it is 
plain that the knowledge supposed to constitute Philosophy, 
differed from other knowledge in its transcendent, exhaustive 
character. In the subsequent course of speculation, 

after the Sceptics had shaken men's faith in their powers of 
reaching such transcendent knowledge, there grew up a 
much-restricted conception of Philosophy. Under Socrates, 



PHILOSOPHY DEFINED. 129 

an! still more under the Stoics, Philosophy became littlo 
•else than the doctrine of right living. Its subject-matter 
was practically cut down to the proper ruling of conduct, 
public and private. Not indeed that the proper ruling of 
conduct, as conceived by sundry of the later Greek thinkers 
to constitute subject-matter of Philosophy, answered to what 
was popularly understood by the proper ruling of conduct. 
The injunctions of Zeno were not of the same class as those 
which guided men from early times downwards, in their 
daily observances, sacrifices, customs, all having more or 
less of religious sanction ; but they were principles of action 
enunciated without reference to times, or persons, or special 
cases. What, then, was the constant element in 

these unlike ideas of Philosophy held by the ancients ? 
Clearly the character in which this last idea agrees with tho 
first, is that within its sphere of inquiry, Philosophy seeks for 
wide and deep truths, as distinguished from the multitudi- 
nous detailed truths which the surfaces of things and actions 
present. 

By comparing the conceptions of Philosophy that have 
been current in modern times, we get a like result. The 
disciples of Schelling, Fichte, and their kindred, join the 
Hegelian in ridiculing the so-called Philosophy which has 
usurped the title in England. Not without reason, they 
laugh on reading of " Philosophical instruments }" and would 
deny that any one of the papers in the Philosophical Trans- 
actions has the least claim to come under such a title. Retali- 
ating on their critics, the English may, and most of them do, 
reject as absurd the imagined Philosophy of the German 
schools. As consciousness cannot be transcended, they hold 
that whether consciousness does or docs not vouch for tho 
existence of something beyond itself, it at any rate cannot 
comprehend that something; and that hence, in so far as any 
Philosophy professes to be an Ontology, it is false. These 
two views cancel one another over large parts of their 
areas. The English criticism on the Germans, cuts off fron> 



130 PHILOSOPHY DEFINED. 

Pliilosopliy all tliat is regarded as absolute knowledge. 
The German criticism on the English tacitly implies that if 
Philosophy is limited to the relative, it is at any rate not 
concerned with those aspects of the relative which are em- 
bodied in mathematical formulas, in accounts of physical 
researches, in chemical analyses, or in descriptions of species 
and reports of physiological experiments. Now 

what has the too-wide German conception in common with 
the conception general among English men of science ; 
which, narrow and crude as it is, is not so narrow and crude 
as their misuse of the word philosophical indicates ? The two 
have this in common, that neither Germans nor English apply 
the word to unsystematized knowledge — to knowledge quite 
uncoordinated with other knowledge. Even the most limited 
specialist would not describe as philosophical, an essay which, 
dealing wholly with details, manifested no perception of the 
bearings of those details on wider truths. 

The vague idea thus raised of that in which the various 
conceptions of Philosophy agree, maybe rendered more defi- 
nite by comparing what has been known in England as 
Natural Philosophy with that development of it called Posi- 
tive Philosophy. Though, as M. Comte admits, the two 
consist of knowledge essentially the same in kind ; yet, by 
having put this kind of knowledge into a more coherent 
form, he has given it more of that character to which the 
term philosophical is applied. Without expressing any 
opinion respecting the truth of his co-ordination, it must be 
conceded that by the fact of its co-ordination, the body of 
knowledge organized by him has a better claim to the title 
Philosophy, than has the comparatively-unorganized body of 
knowledge named Natural Philosophy. 

If subdivisions of Philosophy, or more special forms of it, 
be contrasted with one another, or with the whole, the same 
implication comes out. Moral Philosophy and Political 
Philosophy, agree with Philosojmy at large in the compre- 
hensiveness of their reasonings and conclusions. Though 



PHILOSOPHY DEFINED. 131 

niidcr the head of Moral Philosophy, we treat of human ac- 
tions as right or wrong, wo do not include special directions 
for behaviour in the nursery, at table, or on the exchange ; 
and though Political Philosophy has for its topic the conduct 
of men in their public relations, it docs not concern itself 
with modes of voting or details of administration. Both of 
these sections of Philosophy contemplate particular instances, 
only as illustrating truths of wide application. 

§ 37. Thus every one of these conceptions implies the 
belief in a possible way of knowing things more completely 
than they are known through, simple experiences, mechani- 
cally accumulated in memory or heaped up in cyclopaedias. 
Though in the extent of the sphere which they have sup- 
posed Philosophy to fill, men have differed and still differ 
very widely; yet there is a real if nnavowed agreement 
among them in signifying by this title a knowledge which 
transcends ordinary knowledge. That which remains as the 
common element in these conceptions of Philosophy, after 
the elimination of their discordant elements, is — knowledge 
of the highest degree of generality. We see this tacitly 
asserted by the simultaneous inclusion of God, Nature, and 
Man, within its scope ; or still more distinctly by the divi- 
sion of Philosophy as a whole into Theological, Physical, 
Ethical, &c. For that which characterizes the genus ot 
which these are species, must be something more general 
than that which distinguishes any one species. 

"What must be the specific shape here given to this con- 
ception ? The range of intelligence we find to be limited to 
the relative. Though persistently conscious of a Power 
manifested to us, we have abandoned as futile the attempt 
to learn anything respecting the nature of that Tower ; and 
so have shut out Philosophy from much of the domain sup- 
posed to belong to it. The domain left is that occupied by 
Science. Science concerns itself with the co-existences and 
sequences among phenomena ; grouping these at first into 



132 riiiLosoniY defined. 

generalizations of a simple or low order, and rising gradually 
to higher and more extended generalizations. Bnt if so, 
where remains any subject-matter for Philosophy ? 

The reply is — Philosophy may still properly be the title 
retained for knowledge of the highest generality. Science 
means merely the family of the Sciences — stands for nothing 
more than the sum of knowledge formed of their contribu- 
tions; and ignores the knowledge constituted by the fusion 
of all these contributions into a whole. As usage has de- 
fined it, Science consists of truths existing more or less 
separated. ; and does not recognize these truths as entirely 
integrated. An illustration will make the difference clear. 

If we ascribe the flow of a river to the same force which 
causes the fall of a stone, we make a statement, true as far 
as it goes, that belongs to a certain division of Science. If, 
in further explanation of a movement produced by gravita- 
tion in a direction almost horizontal, we cite the law that 
fluids subject to mechanical forces exert re-active forces 
which are equal in all directions, we formulate a wider 
fact, containing the scientific interpretation of many other 
phenomena; as those presented by the fountain, the hy- 
draulic press, the steam-engine, the air-pump. And when 
this proposition, extending only to the dynamics of fluids, 
is merged in a proposition of general dynamics, comprehend- 
ing the laws of movement of solids as well as of fluids, 
there is reached a yethigher truth; but still a truth that comes 
wholly within the realm of Science. Again, look- 

ing around at Birds and Mammals, suppose we say that air- 
breathing animals are hot-blooded ; and that then, remem- 
bcring how Reptiles, which also breathe air, are not much 
warmer than their media, we say, more truly, that animals 
(bulks being equal) have temperatures proportionate to the 
quantities of air they breathe; and that then, calling to 
mind certain large fish which maintain a heat considerably 
above that of the water they swim in, we further correct 
the generalization by saying that the temperature varies as 



PHILOSOPHY DEFINED. 133 

tho rate of oxygenation of the blood; and that then, modify- 
ing the statement to meet other criticisms, we finally assert 
the relation to be between tho amount of heat and the 
amount of molecular change — supposing we do all this, wo 
state scientific truths that are successively wider and more 
complete, but truths which, to tho last, remain purely scien- 
tific. Once more if, guided by mercantile ex- 
periences, we rcacm the conclusion that prices rise when tho 
demand exceeds the supply; and that commodities flow 
from places where they are abundant to places where they 
are scarce ; and that the industries of different localities are 
determined in their kinds mainly by the facilities which the 
localities afford for them ; and if, studying these generaliza- 
tions of political economy, we trace them all to the truth 
that each man seeks satisfaction for his desires in ways 
costing the smallest efforts — such social phenomena being 
resultants of individual actions so guided; we are still deal- 
ing with the propositions of Science only. 

And now how is Philosophy constituted? It is constituted 
by carrying a stage further the process indicated. So long 
as these truths are known only apart and regarded as inde- 
pendent, even the most general of them cannot without 
laxity of speech be called philosophical. But when, having 
been severally reduced to a simple mechanical axiom, a 
principle of molecular physics, and a law of social action, 
they are contemplated together as corollaries of some ulti- 
mate truth, then we rise to the kind of knowledge that 
constitutes Philosophy proper. 

The truths of Philosophy thus bear the same relation to 
the highest scientific truths, that each of these bears 
to lower scientific truths. As each widest generalization 
of Science comprehends and consolidates the narrower gene- 
ralizations of its own division; so tho generalizations of 
Philosophy comprehend and consolidate tho widest gene- 
ralizations of Science. It is therefore a knowledge the ex- 
treme opposite in kind to that which experience first accu* 



13 i rniLOGorny defined. 

mulatcs. It is the final product of that process which 
begins with a mere colligation of crude observations, goes 
on establishing propositions that are broader and more 
separated from particular cases, and ends in universal pro- 
positions. Or to bring the definition to its simplest and 
clearest form : — Knowledge of the lowest kind is un-unified 
knowledge ; Science is partially -unified knowledge ; Philo- 
sophy is completely -unified knowledge. 

§ 38. Such, at least, is the meaning we must here give to 
the word Philosophy, if we employ it at all. In so defining 
it, we accept that which is common to the various concep- 
tions of it current among both ancients and moderns — re- 
jecting those elements in which these conceptions disagree, 
or exceed the possible range of intelligence. In short, we 
are simply giving precision to that application of the word 
which is gradually establishing itself. 

Two forms of Philosophy, as thus understood, may be 
distinguished and dealt with separately. On the one hand, 
the things contemplated may be the universal truths : all 
particular truths referred to being used simply for proof or 
elucidation of these universal truths. On the other hand, 
setting out with the universal truths as granted, the things 
contemplated may be the particular truths as interpreted by 
them. In both cases we deal with the universal truths; 
but in the one case they are passive and in the other case 
active — in the one case they form the products of exploration 
and in the other case the instruments of exploration. These 
divisions we may appropriately call General Philosophy and 
Special Philosophy respectively. 

The remainder of this volume will be devoted to General 
Philosophy. Special Philosophy, divided into parts deter- 
mined by the natures of the phenomena treated, will be the 
subject-matter of subsequent volumes. 



CHAPTER n. 

THE DATA OF PHILOSOPHY 

§ 39. Every thought involves a whole system of thoughts; 
nud ceases to exist if severed from its various correlatives. 
As we cannot isolate a single organ of a living body, and 
deal with it as though it had a life independent of the rest ; 
so, from the organized structure of our cognitions, we can- 
not cut out one, and proceed as though it had survived the 
separation. The development of formless protoplasm into 
an embryo, is a specialization of parts, the distinctness of 
which increases only as fast as their combination increases 
— each becomes a distinguishable organ only on condition 
that it is bound up with others, which have simul- 
taneously become distinguishable organs; and, similarly, 
from the unformed material of consciousness, a developed 
intelligence can arise only by a process which, in making 
thoughts denned also makes them mutually dependent — 
establishes among them certain vital connections the de- 
struction of which causes instant death of the thoughts. 
Overlooking this all-important truth, however, speculators 
have habitually set out with some professedly-simple datum 
or data ; have supposed themselves to assume nothing 
beyond this datum or these data; and have thereupon pro- 
ceeded to prove or disprove propositions which were, by im- 
plication, already unconsciously asserted along with that 
which was consciously asserted. 

This reasoning in a circle has resulted from the misuse o/ 



13G TIIE DATA OF PHILOSOPHY. 

words : not that misuse commonly enlarged upon — not the 
misapplication or change of meaning whence so much error 
arises ; but a more radical and less obvious misuse. Only 
that thought which is directly indicated by each word has 
been contemplated ; while numerous thoughts indirectly 
indicated have been left out of . consideration. Because a 
spoken or written word can be detached from all others, it 
has been inadvertently assumed that the thing signified by 
a word can be detached from the things signified by all 
other words. Though more-deeply hidden, the mistake is 
of the same order as that made by the Greeks, who were 
continually led astray by the belief in some community of 
nature between the symbol and that which it symbolized. 
For though here community of nature is not assumed to the 
same extent as of old, it is assumed to this extent, that 
because the symbol is separable from all other symbols, and 
can be contemplated as having an independent existence, 
so the thought symbolized may be thus separated and thus 
contemplated. How profoundly this error vitiates 

the conclusions of one who makes it, we shall quickly see on 
taking a case. The sceptical metaphysician, wishing his 
reasonings to be as rigorous as possible, says to himself — 
" I will take for granted only this one thing." What now 
are the tacit assumptions inseparable from his avowed as- 
sumption ? The resolve itself indirectly asserts that there is 
some other thing, or are some other things, which he might 
assume ; for it is impossible to think of unity without think- 
ing of a correlative duality or multiplicity. In the very act, 
therefore, of restricting himself, he takes in much that is 
professedly left out. Again, before proceeding he must give 
a definition of that which he assumes. Is nothing unex- 
pressed involved in the thought of a thing as defined? 
There is the thought of something excluded by the definition 
- — there is, as before, the thought of other existence. But 
there is much more. Defining a thing, or setting a limit to 
it, implies the thought of a limit; and limit cannot be 



THE DATA OF PHILOSOPHY. 137 

thought of apart from some notion of quantity — extensive, 
protcnsive, or intensive. Further, definition is impossible* 
unless there enters into it the thought of difference ; and 
difference, besides being unthinkable without having two 
things that differ, implies the existence of other differences 
than the one recognized ; since otherwise there can be no 
general conception of difference. Nor is this all. As before 
pointed out (§ 24) all thought involves the consciousness of 
likeness : the one thing avowedly postulated cannot be 
known absolutely as one thing, but can be known only as of 
such or such kind — only as classed with other things in 
virtue of some common attribute. Thus along with the 
single avowed datum, we have surreptitiously brought in a 
number of unavowed data — existence other than that alleged, 
quantity, number, limit, difference, likeness, class, attribute, 
Saying nothing of the many more which an exhaustive 
analysis would disclose, we have in these unacknowledged 
postulates, the outlines of a general theory ; and that theory 
can be neither proved nor disproved by the metaphysician's 
argument. Insist that his symbol shall be interpreted at 
every step into its full meaning, with all the complementary 
thoughts implied by that meaning, and you find already 
taken for granted in the premises that which in the conclu- 
sion is asserted or denied. 

In what way, then, must Philosophy set out ? The 
developed intelligence is framed upon certain organized 
and consolidated conceptions of which it cannot divest 
itself; and which it can no more stir without using than 
the body can stir without help of its limbs. In what way, 
then, is it possible for intelligence, striving after Philosophy, 
to give any account of these conceptions, and to show either 
their validity or their invalidity? There is but one way. 
Those of them wnich are vital, or cannot be severed from 
the rest without mental dissolution, must be assumed as 
true provisionally. The fundamental intuitions that are 
essential to the process of thinking, must bo temporarily 



1 3b THE DATA OF PHILOSOPHY. 

accepted as unquestionable : leaving the assumption of their 
unquestionableness to be justified by the results. 

§ 40. How is it to be justified by the results ? As any 
other assumption is justified — by ascertaining that all the 
conclusions deducible from it, correspond with the facts as 
directly observed — by showing the agreement between the 
experiences it leads us to anticipate, and the actual ex- 
periences. There is no mode of establishing the validity of 
any belief, except that of showing its entire congruity with 
all other beliefs. If we suppose that a mass which has a 
certain colour and lustre is the substance called gold, how 
do w T e proceed to prove the hypothesis that it is gold ? Wo 
represent to ourselves certain other impressions which gold 
produces on us, and then observe whether, under the appro- 
priate conditions, this particular mass produces on us such 
impressions. "We remember, as we say, that gold has a high 
specific gravity; and if, on poising this substance on the 
finger, we find that its weight is great considering its bulk, 
we take the correspondence between the represented im- 
pression and the presented impression as further evidence 
that the substance is gold. In response to a demand for 
more proof, we compare certain other ideal and real effects. 
Knowing that gold, unlike most metals, is insoluble in 
nitric acid, we imagine to ourselves a drop of nitric acid 
placed on the surface of this yellow, glittering, heavy sub- 
stance, without causing corrosion ; and when, after so plac- 
ing a drop of nitric acid, no effervescence or other change 
follows, we hold this agreement between the anticipation 
and the experience to be an additional reason for thinking 
that the substance is gold. And if, similarly, the great 
malleability possessed by gold we find to be paralleled by 
the great malleability of this substance ; if, like gold, it 
fuses at about 2,000 deg.; crystallizes in octahedrons; is dis- 
solved by sclenic acid ; and, under all conditions, does what 
gold docs under such conditions ; the conviction that it ia 



THE DATA OF PHILOSOPHY. lol) 

^old reaches what wc regard as tlie highest certainty — we 
know it to be gold in the fullest sense of knowing. For, 
as we here see, our whole knowledge of gold consists in 
nothing more than the consciousness of a definite set of im- 
pressions, standing in definite relations, disclosed under 
definite conditions; and if, in a present experience, the 
impressions, relations, and conditions, perfectly correspond 
with those in past experiences, the cognition has all the 
validity of which it is capable. So that, generalizing the 
statement, hypotheses, down even to those simple ones 
which we make from moment to moment in our acts of re- 
cognition, are verified when entire congruity is found to 
exist between the states of consciousness constituting them, 
and certain other states of consciousness given in percep- 
tion, or reflection, or both ; and no other knowledge is pos- 
sible for us than that which consists of the consciousness of 
such congruities and their correlative incongruities. 

Hence Philosophy, compelled to make those fundamental 
assumptions without which thought is impossible, has to 
justify them by showing their congruity with all other dicta 
of consciousness. Debarred as we are from everything 
beyond the relative, truth, raised to its highest form, can be 
for us nothing more than perfect agreement, throughout the 
whole range of our experience, between those representa- 
tions of things which we distinguish as ideal and those presen- 
tations of things which we distinguish as real. If, by discover- 
ing a proposition to be untrue, we mean nothing more than 
discovering a difference between a thing expected and a 
thing perceived; then a body of conclusions in which no 
such difference anywhere occurs, must be what we mean by 
an entirely true body of conclusions. 

And here, indeed, it becomes also obvious that, Betting 
out with these fundamental intuitions provisionally assumed 
to be true — that is, provisionally assumed to be congruous 
with all other dicta of consciousness — the process of proving 
or disproving the congruity becomes the business of Philo- 



1 10 THE DATA OF rillLOSOrilY. 

sopliy; and tho complete establishment of the congrnity 
becomes the same thing as the complete unification of know- 
ledge in which Philosophy reaches its goal. 

§ 41. What is this datum, or rather, what are these data, 
which Philosophy cannot do without ? Clearly one pri- 
mordial datum is involved in the foregoing statement. 
Already by implication we have assumed, and must for ever 
continue to assume, that congruities and incongruities 
exist, and are cognizable by us. We cannot avoid accept- 
ing as true the verdict of consciousness that some mani- 
festations are like one another and some are unlike one 
another. Unless consciousness be a competent judge of the 
likeness and unlikeness of its states, there can never be 
established that congruity throughout the whole of our 
cognitions which constitutes Philosophy; nor can there ever 
be established that incongruity by which only any hypo- 
thesis, philosophical or other, can be shown erroneous. 

The impossibility of moving towards either conviction or 
scepticism without postulating thus much, we shall see even 
more vividly on observing how every step in reasoning pos- 
tulates thus much, over and over again. To say that all 
things of a certain class are characterized by a certain attri- 
bute, is to say that all things known as like in those various 
attributes connoted by their common name, are also UJce in 
having the particular attribute specified. To say that some 
object of immediate attention belongs to this class, is to say 
that it is UJce all the others in the various attributes con- 
noted by their common name. To say that this object pos- 
sesses the particular attribute specified, is to say that it is 
like tho others in this respect also. While, contrariwise, the 
assertion that the attribute thus inferred to be possessed by 
it, is not possessed, implies the assertion that in place of one 
of the alleged likenesses there exists an unliheness. Neither 
affirmation nor denial, therefore, of any deliverance of reason, 
or any clement of such deliverance, is possible without ac-< 



THE DATA OF PHILOSOPHY. 141 

ccpting the dictum of consciousness that certain of its states 
are like or unlike. "Whence, besides seeing that the unified 
knowledge constituting a completed Philosophy, is a know- 
ledge composed of parts that are universally congruous ; and 
besides seeing that it is the business of Philosophy to esta- 
blish their universal congruity; we also see that every act of 
the process by which this universal congruity is to be esta- 
blished, down even to the components of every inference 
and every observation, consists in the establishment of con- 
gruity. 

Consequently, the assumption that a congruity or an in- 
congruity exists when consciousness testifies to it, is an in- 
evitable assumption. It is useless to say, as Sir ~VV. Hamil- 
ton docs, that " consciousness is to be presumed trustworthy 
until proved mendacious." It cannot be proved mendacious 
in this, its primordial act ; since, as we see, proof involves a 
repeated acceptance of this primordial act. Nay more, the 
very thing supposed to be proved cannot be expressed with- 
out recognizing this primordial act as valid ; since unless we 
accept the verdict of consciousness that they differ, menda- 
city and trustworthiness become identical. Process and 
product of reasoning both disappear in the absence of this 
assumption. 

It may, indeed, be often shown that what, after careless 
comparison, were supposed to be bike states of consciousness, 
are really unlike ; or that what were carelessly supposed to 
be unlike, are really like. But how is this shown ? Simply 
by a more careful comparison, mediately or immediately 
made. And what does acceptance of the revised conclusion 
imply ? Simply that a deliberate verdict of consciousness is 
preferable to a rash one ; or, to speak more definitely — that 
a consciousness of likeness or difference which survives 
critical examination must be accepted in place of one that 
does not survive — the very survival being itself the accept- 
ance. 

And here we jret to the bottom of the matter. The 



112 THE DATA OP PHILOSOPHY. 

permanence of a consciousness of likeness or difference, 
is our ultimate warrant for asserting tlie existence of like- 
ness or difference ; and, in fact, we mean by tlie existence of 
likeness or difference, nothing more than the permanent con- 
sciousness of it. To say that a given congruity or incon- 
gruity exists, is simply our way of saying that we invariably 
have a consciousness of it along with a consciousness of the 
compared things. We know nothing more of existence than 
a continued manifestation. 

§ 42. But Philosophy requires for its datum some substan- 
tive proposition. To recognize as unquestionable a certain 
fundamental process of thought, is not enough : we must 
recognize as unquestionable some fundamental product of 
thought, reached by this process. If Philosophy is com- 
pletely-unified knowledge — if the unification of knowledge 
is to be effected only by showing that some ultimate propo- 
sition includes and consolidates all the results of experience ; 
then, clearly, this ultimate proposition which has to be 
proved congruous with all others, must express a piece of 
knowledge, and not the validity of an act of knowing. 
Having assumed the trustworthiness of consciousness, we 
have also to assume as trustworthy some deliverance of con- 
sciousness. 

What must this be ? Must it not be one affirming the 
widest and most profound distinction which things present ? 
Must it not be a statement of congruities and incongruities 
more general than any other ? An ultimate principle that 
is to unify all experience, must be co-extensive with all ex- 
perience — cannot be concerned with experience of one order 
or several orders, but must be concerned with universal ex- 
perience. That which Philosophy takes as its datum, must 
be an assertion of some likeness and difference to which 
all other likenesses and differences are secondary. If know- 
ing is classifying, or grouping the like and separating the 
unlike ; and if the unification of knowledge proceeds by 



THE DATA CP PIIILOSOFIIY. 143 

arranging the smaller classes of like experiences within tho 
larger, and these within the still larger ; then, the proposi- 
tion by which knowledge is unified,, must be one specifying 
the antithesis between two ultimate classes of experiences, in 
which all others merge. 

Let us now consider what these classes are. In drawing 
the distinction between them, we cannot avoid using words 
that have indirect implications wider than their direct mean- 
ings — we cannot avoid arousing thoughts that imply the 
very distinction which it is the object of the analysis to 
establish. Keeping this fact in mind, we can do no more 
than ignore the connotations of the words, and attend only 
to the things they avowedly denote. 

§ 4-3. Setting out from the conclusion lately reached, 
that all things known to us are manifestations of the Un- 
knowable j and suppressing, so far as we may, every hypo- 
thesis respecting the something which underlies one or other 
order of these manifestations ; we find that the manifesta- 
tions, considered simply as such, are divisible into two great 
classes, called by some impressions and ideas. The implica- 
tions of these words are apt to vitiate the reasonings of those 
who use the words ; and though it may be possible to use 
them only with reference to the differential characteristics 
they are meant to indicate, it is best to avoid the risk of 
making unacknowledged assumptions. The term sensation, 
too, commonly used as the equivalent of impression, implies 
certain psychological theories — tacitly, if not openly, postu- 
lates a sensitive organism and something acting upon it; 
and can scarcely be employed without bringing these postu- 
lates into the thoughts and embodying them in the in- 
ferences. Similarly, the phrase state of consciousness, as 
signifying either an impression or an idea, is objectionable. 
As we cannot think of a state without thinking of something 
of which it is a state, and which is capable of different 
states, there is involved a foregone conclusion — an un- 



14:1 THE DATA OF PHILOSOPHY. 

developed system of metaphysics. Here, accepting the in- 
evitable implication that the manifestations imply some- 
thing manifested, our aim must be to avoid any further 
implications. Though we cannot exclude further implica- 
tions from our thoughts, and cannot carry on our argument 
without tacit recognitions of them, we can at any rate refuse 
to recognize them in the terms with which we set out. We 
may do this most effectually by classing the manifestations 
as vivid and faint respectively. Let us consider what are 
the several distinctions that exist between these. 

And first a few words on this most conspicuous distinction 
which these antithetical names imply. Manifestations that 
occur under the conditions called those of perception (and 
the conditions so called we must here, as much as possible, 
separate from all hypotheses, and regard simply as them- 
selves a certain group of manifestations) are ordinarily far 
more distinct than those which occur under the conditions 
known as those of reflection, or memory, or imagination, or 
ideation. These vivid manifestations do, indeed, sometimes 
differ but little from the faint ones. When nearly dark we 
may be unable to decide whether a certain manifestation 
belongs to the vivid order or the faint order — whether, as 
we say, we really see something or fancy we see it. In like 
manner, between a very feeble sound and the imagination of 
a sound, it is occasionally difficult to discriminate. But 
these exceptional cases are extremely rare in comparison 
with the enormous mass of cases in which, from instant to 
instant, the vivid manifestations distinguish themselves un- 
mistakcably from the faint. Conversely, it also 

now and then happens (though under conditions which we 
significantly distinguish as abnormal) that manifestations of 
the faint order become so strong as to be mistaken for those 
of the vivid order. Idea* sights and sounds are in the in- 
sane so much intensified as to be classed with real sights 
and sounds — ideal and real being here supposed to imply no 
other ecu Iras t than that which we are considering. These 



THE DATA OF PHILOSOPHY. 145 

cases of illusion, as wo call them, bear, however, so small a 
ratio to the great mass of cases, that we may safely neglect 
them, and say that the relative faintness of these manifesta- 
tions of the second order is so marked, that we are never in 
doubt as to their distinctness from those of the first order. 
Or if we recognize the exceptional occurrence of doubt, the 
recognition serves but to introduce the significant fact that 
we have other means of determining to which order a parti- 
cular manifestation belongs, when the test of comparative 
vividness fails us. 

Manifestations of the vivid order precede, in our experi- 
ence, those of the faint order; or> in the terms quoted 
above, the idea is an imperfect and feeble repetition of the 
original impression. To put the facts in historical sequence 
— there is first a presented manifestation of the vivid order, 
and then, afterwards, there may come a represented manifes- 
tation that is like it except in being much less distinct. 
Besides the universal experience that after having those 
vivid manifestations which we call particular places and 
persons and things, we can have those faint manifestations 
which we call recollections of the places, persons, and things, 
but cannot have these previously ; and besides the universal 
experience that before tasting certain substances and smell- 
ing certain perfumes we are without the faint manifestations 
known as ideas of their tastes and smells ; we have also the 
fact that where certain orders of the vivid manifestations 
are shut out (as the visible from the blind and the audible 
from the deaf) the corresponding faint manifestations 
never come into existence. It is true that in 

some cases the faint manifestations precede the vivid. 
What we call a conception of a machine may presently be 
followed by a vivid manifestation matching it — a so-called 
actual machine. Bat in the first place this occurrence of the 
vivid manifestation after the faint, haj no analogy with the 
occurrence of the faint after the viv>I— iU sequence is not 
spontaneous like that of the idea after the impression. And 



M6 THE DATA OP PHILOSOPHY. 

in the second place, though a faint manifestation of this 
kind may occur before the vivid one answering to it, yet its 
component parts may not. Without the foregoing vivid 
manifestations of wheels and bars and cranks, the inventor 
could have no faint manifestation of his new machine. Thus, 
the occurrence of the faint manifestations is made possible 
by the previous occurrence of the vivid. They are distin- 
guished from one another as independent and dependent. 

These two orders of manifestations form concurrent 
series ; or rather let us call them, not series, which implies 
linear arrangements, but heterogeneous streams or pro- 
cessions. These run side by side; each now broadening 
and now narrowing, each now threatening to obliterate its 
neighbour, and now in turn threatened with obliteration, 
but neither ever quite excluding the other from their 
common channel. Let us watch the mutual actions of the 
two currents. During what we call our states of 

activity, the vivid manifestations predominate. "We simul- 
taneously receive many and varied presentations — a crowd 
of visual impressions, sounds more or less numerous, resist- 
ances, tastes, odours, &c. ; some groups of them changing, 
and others temporarily fixed, but altering as we move ; and 
when we compare in its breadth and massiveness this 
heterogeneous combination of vivid manifestations with the 
concurrent combination of faint manifestations, these last 
sink into relative insignificance. They never wholly dis- 
appear however. Always along with the vivid manifesta- 
tions, even in their greatest obtrusiveness, analysis discloses 
a thread of thoughts and interpretations constituted of the 
faint manifestations. Or if it be contended that the occur- 
rence of a deafening explosion or an intense pain may for a 
moment exclude every idea, it must yet be admitted that 
such breach of continuity can never be immediately known 
as occurring; since the act of knowing is impossible in 
the absence of ideas. On the other hand, after 

certain vivid manifestations which we' call the acts of 



THE DATA OF PHILOSOPHY. 147 

closing tlie eyes and adjusting ourselves so as to enfeeble 
the vivid manifestations of pressure, sound, &c, the mani- 
festations of the faint order become relatively predominant. 
The ever- varying heterogeneous current of them, no longer 
obscured by the vivid current, grows more distinct, and 
seems almost to exclude the vivid current. Bat while what 
we call consciousness continues, the current of vivid mani- 
festations, however small the dimensions to which it is 
reduced, still continues : pressure and touch do not wholly 
disappear. It is only on lapsing into the unconsciousness 
termed sleep, that manifestations of the vivid order cease 
to be distinguishable as such, and those of the faint order 
come to be mistaken for them. And even of this we remain 
unaware till the recurrence of manifestations of the vivid 
order on awaking : we can never infer that manifestations 
of the vivid order have been absent, until they are again 
present ; and can therefore never directly know them to bo 
absent. Thus, of the two concurrent compound 

series of manifestations, each preserves its continuity. 
As they flow sido by side, each trenches on the other, 
but there never comes a moment at which it can be said 
that the one has, then and there, broken through the other. 
Besides this longitudinal cohesion there is a lateral cohe- 
sion, both of the vivid to the vivid and of the faint to tho 
faint. The components of the vivid series are bound to- 
gether by ties of co-existence as well as by ties of succes- 
sion ; and the components of the faint series are similarly 
bound together. Between the degrees of union in the two 
cases there are, however, marked and very significant 
differences. Let us observe them. Over an area 

occupying part of tho so-called field of view, lights and 
shades and colours and outlines constitute a group to 
which, as the signs of an object, we give a certain name ; 
and while they continue present, these united vivid manifes- 
tations remain inseparable. So, too, is it with co-existing 
groups of manifestations : each persists as a speciai com- 



113 



TIIE DATA OP PniLOSOPEY. 



bination ; and most of them preserve unchanging relations 
with those around. Such of them as do not — such of them 
as are capable of what we call independent movements, 
nevertheless show us a constant connexion between certain 
of the manifestations they include, along with a variable 
connexion of others. And though after certain vivid mani- 
festations known as a change in the conditions of percep- 
tion, there is a change in the proportions among the vivid 
manifestations constituting any group, their cohesion con- 
tinues — we do not succeed in detaching one or more of 
them from the rest. Turning to the faint mani- 

festations, we see that while there are lateral cohesions 
among them, these are much less extensive, and in most 
cases are by no means so rigorous. After closing my eyes, 
I can represent an object now standing in a certain place, 
as standing in some other place, or as absent. While I 
look at a blue vase, I cannot separate the vivid manifest 
tation of blueness from the vivid manifestation of a parti- 
cular shape; but, in the absence of these vivid manifesta- 
tions, I can separate the faint manifestation of the shape 
from the faint manifestation of blueness, and replace the last 
by a faint manifestation of redness. It is so throughout : 
the faint manifestations cling together to a certain extent, 
but nevertheless most of them may be re-arranged with 
facility. Indeed none of the individual faint manifestations 
cohere in the same indissoluble way as do the individual 
vivid manifestations. Though along with a faint manifesta- 
tion of pressure there is always some faint manifestation of 
extension, yet no particular faint manifestation of extension 
is bound up with a particular faint manifestation of pres- 
sure. So that whereas in the vivid order the indi- 
vidual manifestations cohere indissolubly, usually in large 
groups, in the faint order the individual manifestations none 
of them cohere indissolubly, and are most of them loosely 
aggregated: the only indissoluble cohesions among thorn 
being between certain of their generic forms. 



THE DATA OP PHILOSOPHY. 149 

"While the components of each current cohere with ono 
another, they do not cohere at all strongly with those of 
the other current. Or, more correctly, we may say that the 
vivid current habitually flows on quite undisturbed by the 
faint current; and that the faint current, though often 
largely determined by the vivid, and always to some extent 
carried with it, may yet maintain a substantial independence, 
letting the vivid current slide by. We will glance at the 
interactions of the two. The successive faint 

manifestations constituting thought, fail to modify in the 
slightest degree the vivid manifestations that present them- 
selves. Omitting a quite peculiar class of exceptions, here- 
after to be dealt with, the vivid manifestations, fixed and 
changing*, are not directly affected by the faint. Those 
which I distinguish as components of a landscape, as 
surgings of the sea, as whistlings of the wind, as move- 
ments of vehicles and people, are absolutely uninfluenced 
by the accompanying faint manifestations which I distin- 
guish as my ideas. On the other hand, the 
current of faint manifestations is always somewhat per- 
turbed by the vivid. Frequently it consists mainly of faint 
manifestations which cling to the vivid ones, and are carried 
with them as they pass — memories and suggestions as we 
call them, which, joined with the vivid manifestations pro- 
ducing them, form almost the whole body of the manifesta- 
tions. At other times, when, as we say, absorbed in 
thought, the disturbance of the faint current is but super- 
ficial. The vivid manifestations drag after them such few 
faint manifestations only as constitute recognitions of them : 
to each impression adhere certain ideas which make up 
the interpretation of it as such or such. But there mean- 
while flows on a main stream of faint manifestations wholly 
unrelated to the vivid manifestations — what we call a 
reverie, perhaps, or it may be a process of reasoning. And 
occasionally, during the state known as absence of mind, 
this current of faint manifestations so far predominates that 
8 



150 THE DATA OF I'lIILOSOriir. 

tlio vivid current scarcely affects it at all. Hence, 

these concurrent series of manifestations, each coherent with 
itself longitudinally and laterally, have but a partial cohe- 
rence with one another. The vivid series is quite unmoved 
by its passing neighbour; and though the faint series is 
always to some extent moved by the adjacent vivid series, 
and is often carried bodily along with the vivid series, it 
may nevertheless become in great measure separate. 

Yet another all-important differential characteristic has to 
be specified. The conditions under which these respective 
orders of manifestations occur, are different; and the con- 
ditions of occurrence of each order belong to itself. When- 
ever the immediate antecedents of vivid manifestations are 
traceable, they prove to be other vivid manifestations ; and 
though we cannot say that the antecedents of the faint 
manifestations always lie wholly among themselves, yet the 
essential ones' lie wholly among themselves. These state- 
ments will need a good deal of explanation. Ob- 
viously, changes among any of the vivid manifestations we 
are contemplating — the motions and sounds and alterations 
of appearance, in what we call surrounding objects — are 
either changes that follow certain vivid manifestations, or 
changes of which the antecedents are unapparent. Some of 
the vivid manifestations, however, occur only under certain 
conditions that seem to be of another order. Those which 
we know as colours and visible forms presuppose open eyes. 
But what is the opening of the eyes, translated into the 
terms we are here using ? Literally it is an occurrence of 
certain vivid manifestations. The preliminary idea of open- 
ing the eyes does, indeed, consist of faint manifestations, but 
the act of opening them consists of vivid manifestations. 
And the like is still more conspicuously the case with those 
movements of the eyes and the head which are followed by 
new groups of vivid manifestations. Similarly with the 
antecedents to the vivid manifestations which we distinguish 
as those of touch and pressure. All the changeable ones have 



THE DATA OF PHILOSOPHY. 151 

for their conditions of occurrence certain vivid manifesta- 
tions which wo know as sensations of muscular tension. It 
is true that the conditions to these conditions are manifesta- 
tions of tho faint order — those ideas of muscular actions 
which precede muscular actions. And we are here intro- 
duced to a complication arising from the fact that what is 
called the body, is present to us as a set of vivid manifesta- 
tions connected with the faint manifestations in a special 
way — a way such that in it alone certain vivid manifesta- 
tions are capable of being produced by faint manifestations. 
There must be named, too, the kindred exception furnished 
by the emotions — an exception which, however, serves to 
enforce tho general proposition. For while it is true that 
the emotions are to be considered as a certain kind of vivid 
manifestations, and are yet capable of being produced by 
the faint manifestations we call ideas ; it is also true that 
because the conditions to their occurrence thus exist anion cr 

o 

the faint manifestations, we class them as belonging to the 
B°.me general aggregate as the faint manifestations — do not 
3 them with such other vivid manifestations as colours, 
sounds, pressures, smells, &c. But omitting these peculiar 
vivid manifestations which we know as muscular tensions 
and emotions, and which we habitually class apart, we may 
say of all the rest, that the conditions to their exist- 
ence as vivid manifestations are manifestations belonging 
to their own class. In the parallel current we 

find a parallel truth. Though many manifestations of the 
faint order are partly caused by manifestations of the vivid 
order, which call up memories as we say, and suggest in- 
ferences; yet these results mainly depend on certain antece- 
dents belonging to the faint order. A cloud drifts across 
the sun, and may or may not produce an effect on the cur- 
rent of ideas : the inference that it is about to rain may 
arise, or there may be a persistence in the previous train of 
thought — a difference obviously determined by conditions 
wnong the thoughts. Again, such power as a vivid mani- 



152 THE DATA OP PHILOSOPHY. 

fcstation lias of causing certain faint manifestations to arise, 
depends on tlie pre-existence of certain appropriate faint 
manifestations. If I have never heard a curlew, the cry 
which an unseen one makes, fails to produce an idea of the 
bird . And wo have but to remember what various trains of 
reflection are aroused by the same sight, to see how essen- 
tially the occurrence of each faint manifestation depends on 
its relations to other faint manifestations that have gone 
before or that co-exist. 

Here we arc introduced, lastly, to one of the most striking, 
and perhaps the most important, of the differences between 
those two orders of manifestations — a difference continuous 
with that just pointed out, but one which may with advan- 
tage be separately insisted upon. The conditions of occur- 
rence are not distinguished solely by the fact that each set, 
when identifiable, belongs to its own order of manifestations; 
but they are further distinguished in a very significant way. 
Manifestations of the faint order have traceable antece- 
dents; can be made to occur by establishing their condi- 
tions of occurrence ; and can be suppressed by establishing 
other conditions. But manifestations of the vivid order 
continually occur without previous presentation of their 
antecedents ; and in many cases they persist or cease, under 
cither known or unknown conditions, in such way as to 
show that their conditions are wholly beyond control. 
The impression distinguished as a flash of lightning, breaks 
across the current of. our thoughts, absolutely without 
notice. The sounds from a band that strikes up in the 
street or from a crash of china in the next room, are not 
connected with any of the previously-present manifesta- 
tions, either of the faint or of the vivid order. Often 
these vivid manifestations, arising unexpectedly, persist in 
thrusting themselves across the current of the faint ones ; 
which not only cannot directly affect them, but cannot 
even indirectly affect them. A wound produced by a 
violent blow from behind, is a vivid manifestation the con* 



THE DATA or rniLosorny. 153 

ditions of occurrence of which were neither among the faint 
nor among the vivid manifestations ; and the conditions to 
the persistence of which are bound up with the vivid mani- 
festations in some unmanifestcd way. So that whereas in 
the faint order, the conditions of occurrence are always 
among the pre-existing or co-existing manifestations; in 
the vivid order, the conditions of occurrence are often not 
present. 

Thus we find many salient characters in which manifesta- 
tions of the one order are like one another, and unlike those 
of the other order. Let us briefly re-enumerate these salient 
characters. Manifestations of the one order are vivid and 
those of the other are faint. Those of the one order are 
originals, while those of the other order are copies. The 
first form with one another a scries, or heterogeneous current, 
that is never broken; and the second also form with one 
another a parallel series or current that is never broken : or, to 
speak strictly, no breakage of either is ever directly known. 
Those of the first order cohere with one another, not only 
longitudinally but also transversely ; as do also those of tho 
second order with one another. Between manifestations of 
the first order the cohesions, both longitudinal and trans- 
verse, are indissoluble; but between manifestations of tho 
second order, these cohesions are most of them dissoluble 
with case. "While the members of each series or current are 
so coherent with one another that the current cannot be 
broken, the two currents, running side by side as they do, 
have but little coherence! — the great body of tho vivid 
current is absolutely unmodifiable by the faint, and the faint 
may become almost separate from the vivid. The conditions 
under which manifestations of either order occur, themselves 
belong to that order ; but whereas in the faint order, the 
conditions are always present, in the vivid order the condi- 
tions arc often not present, but lie somewhere outside of tho 
scries. Seven separate characters, then, mark off these two 
orders of manifestations from one another. 



151 THE DATA OF PHILOSOPHY. 

§ 44. What is tlio meaning of this ? The foregoing 
analysis was commenced in the belief that the proposition 
postulated by Philosophy, must affirm some ultimate classes 
of likenesses and unlikencsses, in which all other classes 
merge ; and here we have found that all manifestations of 
the Unknowable are divisible into two such classes. What 
is the division equivalent to ? 

Obviously it corresponds to the division between object 
and subject. This profoundest of distinctions among the 
manifestations of the Unknowable, we recognize by grouping 
them into self and not-self. These faint manifestations, 
forming a continuous whole differing from the other in the 
quantity, quality, cohesion, and conditions of existence of 
its parts, we call the ego ; and these vivid manifestations, 
indissolubly bound together in relatively-immense masses, 
and having independent conditions of existence, we call the 
non-ego. Or rather, more truly — each order of manifesta- 
tions carries with it the irresistible implication of some 
power that manifests itself; and by the words ego and non- 
ego respectively, we mean the power that manifests itself in 
the faint forms, and the power that manifests itself in the 
vivid forms. 

As we here see, these consolidated conceptions thus anti- 
thetically named, do not originate in some inscrutable way ; 
but they have for their explanation the ultimate law of 
thought that is beyond appeal. The persistent conscious- 
ness of likeness or difference, is one which, by its very per- 
sistence, makes itself accepted ; and one which transcends 
scepticism, since without it even doubt becomes impossible. 
And the primordial division of self from not-self, is a cumu- 
li live result of persistent consciousnesses of likenesses and 
differences among manifestations. Indeed, thought exists 
only through that kind of act which lc&ds us, from moment 
to moment, to refer certain manifestations to the one class 
with which they have so many common attributes, and 
others to the other class with which ihey have common 



THE DATA OF rillLOSOrilY. 155 

attributes equally numerous. And the myriad-fold repeti- 
tion of these classiugs, bringing about the myriad-fold asso- 
ciations of each manifestation with those of its own class, 
brings about this union among the members of each class, 
and this disunion of the two classes. 

Strictly speaking, this segregation of the manifestations 
and coalescence of them into two distinct wholes, is in 
great part spontaneous, and precedes all deliberate judg- 
ments ; though it is endorsed by such judgments when they 
come to be made. For the manifestations of each order 
have not simply that kind of union implied by grouping 
them as individual objects of the same class ; but, as we 
have seen, they have the much more intimate union implied 
by actual cohesion. This cohesive union exhibits itself 
before any conscious acts of classing take place. So that, in 
truth, these two contrasted orders of manifestations are 
substantially self-separated and self-consolidated. The 
members of each, by clingiug to one another and parting 
from their opposites, themselves form these united wholes 
constituting object and subject. It is this self-union which 
gives to these wholes formed of them, their individualities 
as wholes, and that separateness from each other which 
transcends judgment; and judgment merely aids the pre- 
determined segregation by assigning to their respective 
classes, such manifestations as have not distinctly united 
themselves with the rest of their kind. 

One further perpetually-repeated act of judgment there is, 
indeed, which strengthens this fundamental antithesis, and 
gives a vast extension to one term of it. We continually 
learn that while the conditions of occurrence of faint mani- 
festations are always to be found, the conditions of oc- 
currence of vivid manifestations are often not to be found. 
We also continually learn that vivid manifestations which 
have no perceivable antecedents amoug the vivid manifesta- 
tions^ are like certain preceding ones which had perceivable 
antecedents anions the vivid manifestations. Joining these 



!5(j THE DATA OP PHILOSOPHY. 

two experiences together, there results the irresistible con- 
ccption tli at some vivid manifestations have conditions of 
occurrence existing out of the current of vivid manifesta- 
tions — existing as potential vivid manifestations capable of 
becoming actual. And so we are made vaguely conscious 
of an indefinitely-extended region of power or being, not 
merely separate from the current of faint manifestations 
constituting the ego, but lying beyond the current of vivid 
manifestations constituting the immediately-present portion 
of the non-ego. 

§ 45. In a very imperfect way, passing over objections 
and omitting needful explanations, I have thus, in the 
narrow space that could properly be devoted to it, indicated 
the essential nature and justification of that primordial pro- 
position which Philosophy requires as a datum. I might, 
indeed, safely have assumed this ultimate truth; which 
Common Sense asserts, which every step in Science takes for 
granted, and which no metaphysician ever for a moment 
succeeded in expelling from consciousness. Setting out 
with the postulate that the manifestations of the Unknowable 
fall into the two separate aggregates constituting the world 
of consciousness and the world beyond consciousness, I might 
have let the justification of this postulate depend on its 
subsequently-proved congruity with every result of experi- 
ence, direct and indirect. But as all that follows proceeds 
upon this postulate, it seemed desirable briefly to indicate 
its warrant, with the view of shutting out criticisms that 
might else be made. It seemed desirable to show that this 
fundamental cognition is neither, as the idealist asserts, an 
illusion, nor as the sceptic thinks, of doubtful worth, nor as is 
held by the natural realist, an inexplicable intuition; but 
that it is a legitimate deliverance of consciousness elaborat- 
ing its materials after the laws of its normal action. While, 
in order of time, the establishment of this distinction precedes 
all reasoning ; and while, running through our mentai 



THE DATA OF rillLOSOPUY. 157 

structure as it docs, we arc debarred from reasoning about 
it -without taking for granted its existence; analysis never- 
theless enables us to justify the assertion of its existence, by 
showing that it is also the outcome of a classification based 
on accumulated likenesses and accumulated differences. In 
other words — Reasoning, which is itself but a formation of 
cohesions among manifestations, here strengthens, by the 
cohesions it forms, the cohesions which it finds already 
existing. 

So much, then, for the data of Philosophy. In common 
with Religion, Philosophy assumes the primordial implica- 
tion of consciousness, which, as we saw in the last part, has 
the deepest of all foundations. It assumes the validity of a 
certain primordial process of consciousness, without which 
inference is impossible, and without which there cannot 
even be either affirmation or denial. And it assumes the 
validity of a certain primordial product of consciousness, 
which though it originates in an earlier process, is also, in 
one sense, a product of this process, since by this process 
it is tested and stamped as genuine. In brief, our postu- 
lates are : — an Unknowable Power ; the existence of know- 
able likenesses and differences among the manifestations of 
that Power; and a resulting segregation of the manifes- 
tations into those of subject and object. 

Before proceeding with the substantial business of Philo- 
sophy — the complete unification of the knowledge partially 
unified by Science, a further preliminary is needed. The 
manifestations of the Unknowable, separated into the two 
divisions of self and not-self, are re-divisible into certain 
t general forms, the reality of which Science, as well as 
Common Sense, from moment to moment assumes. In the 
chapter on " Ultimate Scientific Ideas," it was shown that 
we know nothing of these forms, considered in themselves. 
As, nevertheless, we must continue to use the words signify- 
ing them, it is needful to say what interpretations are to be 
put on these words. 



CHAPTER III. 

SPACE, TIME, MATTER, MOTION, AND FORCE. 

§ 46. That sceptical state of mind which the criticisms of 
Philosophy usually produce, is, in great measure, caused by 
the misinterpretation of words. A sense of universal illusion 
ordinarily follows the reading of metaphysics ; and is strong 
in proportion as the argument has appeared conclusive. This 
sense of universal illusion would probably never have arisen, 
had the terms used been always rightly construed. Unfor- 
tunately, these terms have by association acquired meanings 
that are quite different from those given to them in philoso- 
phical discussions ; and the ordinary meanings being un- 
avoidably suggested, there results more or less of that dream- 
like idealism which is so incongruous with our instinctive 
convictions. The word phenomenon and its equivalent word 
appearance, are in great part to blame for this. In ordinary 
speech, these are uniformly employed in reference to visual 
perceptions. Habit, almost, if not quite, disables us from 
thinking of appearance except as something seen ; and though 
phenomenon has a more generalized meaning, yet we can- 
not rid it of associations with appearance, which is its verbal 
equivalent. When, therefore, Philosophy proves that our 
knowledge of the external world can be but phenomenal — 
when it concludes that the things of which we are conscious 
are appearances ; it inevitably arouses in us the notion of an 
lllusivcncss like that -to which our visual perceptions are so 
liable in comparison with our tactual perceptions. Good pic* 



SPACE, TIME, MATTER, MOTION, AND FORCE. 159 

rures show us that the aspects of things may be very nearly 
simulated by colours on canvass. The looking-glass still more 
distinctly proves how deceptive is sight when unverified by 
touch. And the frequent cases in which we misinterpret the 
impressions made on our eyes, and think we see something 
which we do not see, further shake our faith in vision. So 
that the implication of uncertainty has infected the very word 
appearance. Hence, Philosophy, by giving it an extended 
meaning, leads us to think of all our senses as deceiving us in 
the same way that the eyes do ; and so makes us feel ourselves 
floating in a world of phantasms. Had phenomenon and ap- 
pearance no such misleading associations, little, if any, of this 
mental confusion would result. Or did we in place of them 
use the term effect, which is equally applicable to all impres- 
sions produced on consciousness through any of the senses, 
and which carries with it in thought the necessary correla- 
tive cause, with which it is equally real, we should be in little 
danger of falling into the insanities of idealism. 

Such danger as there might still remain, would disappear 
on making a further verbal correction. At present, the con- 
fusion resulting from the above misinterpretation, is made 
greater by an antithetical misinterpretation. We increase 
the seeming unreality of that phenomenal existence which 
we can alone know, by contrasting it with a noumenal exist- 
ence which we imagine would, if we could know it, be more 
truly real to us. But we delude ourselves with a verbal fic- 
tion. AVTiat is the meaning of the word real ? This 
i.-s the question which underlies every metaphysical inquiry ; 
and the neglect of it is the remaining cause of the chronic 
antagonisms of metaphysicians. In the interpretation put on 
tie word real, the discussions of philosophy retain one ele- 
ment of the vulgar conception of things, while they reject all 
its other elements; and create confusion by the inconsistency. 
The peasant, on contemplating an object, does not regard 
fhat which he contemplates as something in himself, but be- 
lieves the thing of which he is conscious to be the external 



160 SPACE, TIME, MATTER, MOTION, AND EOKCE. 

object — imagines that his consciousness extends to the very 
place wheiQ the object lies : to him the appearance and the 
reality are one and the same thing. The metaphysician, 
however, is convinced that consciousness cannot embrace the 
reality, but only the appearance of it ; and so he transfers the 
appearance into consciousness and leaves the reality outside. 
This reality left outside of consciousness, he continues to 
think of much in the same way as the ignorant man thinks 
of the appearance. Though the reality is asserted to be out 
of consciousness, yet the realness ascribed to it is constantly 
spoken of as though it were a knowledge possessed apart from 
consciousness. It seems to be forgotten that the conception of 
reality can be nothing more than some mode of consciousness; 
and that the question to be considered is — What is the rela- 
tion between this mode and other modes ? 

By reality we mean persistence in consciousness: a per- 
sistence that is either unconditional, as our consciousness of 
space, or that is conditional, as our consciousness, of a body 
while grasping it. The real, as we conceive it, is distinguished 
solely by the test of persistence ; for by this test we separate 
it from what we call the unreal. Between a person standing 
before us, and the idea of such a person, we discriminate by 
our ability to expel the idea from consciousness, and our in- 
ability, while looking at him, to expel the person from con- 
sciousness. And when in doubt as to the validity or illusive- 
ness of some impression made upon us in the dusk, we settle 
the matter by observing whether the impression persists on 
closer observation ; and we predicate reality if the persistence 
is complete. How truly persistence is what we mean 

by reality, is shown in the fact that when, after criticism has 
proved that the real as we are conscious of it is not the ob- 
jectively real, the indefinite notion which we form of the ob- 
jectively real, is of something which persists absolutely, under 
all changes of mode, form, or appearance. And the fact that 
we cannot form even an indefinite notion of the absolutely 
real, except as the absolutely persistent, clearly implies thai 



SPACE, TIME, MATTER, MOTION, AND FORCE. * 161 

persistence is our ultimate test of the real as present to con- 
sciousness. 

Reality then, as we think it, being nothing more than 
persistence in consciousness, the result must be the same to 
us whether that which we perceive be the Unknowable 
itself, or an effect invariably wrought on us by the Unknow- 
able. If, under constant conditions furnished by our con- 
stitutions, some Power of which the nature is beyond 
conception, always produces some mode of consciousness — ■ 
if this mode of consciousness is as persistent as would be 
this Power were it in consciousness ; the reality will be to 
consciousness as complete in the one case as in the other. 
\Vcre Unconditioned Being itself present in thought, it 
could but be persistent ; and if, instead, there is present 
Being conditioned by the forms of thought, but no less 
persistent, it must be to us no less real. 

Hence there may be drawn these conclusions : — First, that 
we have an indefinite consciousness of an absolute reality 
transcending relations, which is produced by the absolute 
persistence in us of something which survives all changes of 
relation. Second, that we have a definite consciousness of 
relative reality, which unceasingly persists in us under one 
or other of its forms, and under each form so long as the con- 
ditions of presentation are fulfilled ; and that the relative 
reality, being thus continuously persistent in us, is as real to 
us as would be the absolute reality could it be immediately 
known. Third, that thought being possible only under rela- 
tion, the relative reality can be conceived as such only in con- 
nexion with an absolute reality ; and the connexion between 
the two being absolutely persistent in our consciousness, is 
real in the same sense as the terms it unites are real. 

Thus then we may resume, with entire confidence, those 
realistic conceptions which philosophy at first sight seems to 
dissipate. Though reality under the forms of our conscious- 
ness, is but a conditioned effect of the absolute reality, yet 
this conditioned effect standing in indissoluble relation with 
its unconditioned cause, and being equally persistent with it 



162 SPACE, TIME, MATTER, MOTION, AND FOECE. 

bo long as the conditions persist, is, to the consciousness sup- 
plying those conditions, equally real. The persistent impres- 
sions being the persistent results of a persistent cause, are for 
practical purposes the same to us as the cause itself ; and may 
be habitually dealt with as its equivalents. Somewhat in the 
same way that our visual perceptions, though merely symbols 
found to be the equivalents of tactual perceptions, are yet so 
identified with those tactual perceptions that we actually ap- 
pear to see the solidity and hardness which we do but infer, 
and thus conceive as objects what are only the signs of objects ; 
so, on a higher stage, do we deal with these relative realities 
as though they were absolutes instead of effects of the abso- 
lute. And we may legitimately continue so to deal with them 
as long as the conclusions to which they help us are understood 
as relative realities and not absolute ones. 

This general conclusion it now remains to interpret speci- 
fically, in its application to each of our ultimate scientific 
ideas. 

§ 47. * We think in relations. This is truly the form of 
all thought ; and if there are any other forms, they must be 
derived from this. We have seen (Chap. iii. Part I.) that 
the several ultimate modes of being cannot be known or con- 
ceived as they exist in themselves ; that is, out of relation to 
our consciousness. "We have seen, by analyzing the pro- 
duct of thought, (§ 23,) that it always consists of relations ; 
and cannot include anything beyond the most general of these. 
On analyzing the process of thought, we found that cogni- 
tion of the Absolute was impossible, because it presented 
neither relation, nor its elements — difference and likeness. 
Further, we found that not only Intelligence but Life itself, 
consists in the establishment of internal relations in corre- 
spondence with external relations. And lastly, it was shown 

» For the psychological conclusions briefly set forth in this and the three sec- 
tions following it, the justification wil be found in the writer's Principles oj 
Psychology. 



SPACE, TIME, MATTER, MOTION, AND FORCE. 163 

that though by the relativity of our thought we are eternally 
debarred from knowiug or conceiving Absolute Being ; yet 
that this very relativity of our thought, necessitates that vaguo 
consciousness of Absolute Being which no mental effort can 
suppress. That relation is the universal form of thought, is 
thus a truth which all kinds of demonstration unite in 
proving. 

By the transcendentalists, certain other phenomena of con- 
sciousness are regarded as forms of thought. Presuming 
that -relation would be admitted by them to be a universal 
mental form, they would class with it two others as also uni- 
versal. "Were their hypothesis otherwise tenable however, it 
must still be rejected if such alleged further forms are inter- 
pretable as generated by the primary form. If we think in 
relations, and if relations have certain universal forms, it is 
manifest that such universal forms of relations will become 
universal forms of our consciousness. And if these further 
universal forms are thus exj^licable, it is superfluous, and 
therefore unphilosophical, to assign them an independent 
origin. Now relations are of two orders — relations 

of sequence, and relations of co-existence ; of which the one 
is original and the other derivative. The relation of sequence 
i- given in every change of consciousness. The relation of 
co-existence, which cannot be originally given in a conscious- 
ness of which the states are serial, becomes distinguished only 
when it is found that certain relations of sequence have their 
terms presented in consciousness in either order with equal 
facility ; while the others are presented only in one order. 
Relations of which the terms are not reversible, become re- 
cognized as sequences proper ; while relations of which the 
terms occur indifferently in both directions, become recog- 
nized as co- existences. Endless experiences, which from 
moment to moment present both orders of these relations, 
render the distinction between them perfectly definite ; 
and at the same time generate an abstract conception of 
each. The abstract of all sequences is Time. The abstract 



1(31 SPACE, TIME, MATTER, MOTION, AND FOItCK. 

of all co-existences is Space. From the fact that in thought, 
Time is inseparable from sequence, and Space from co-exist- 
ence, we do not here infer that Time and Space are original 
conditions of consciousness under which sequences and co- 
existences are known ; but we infer that our conceptions of 
Time and Space are generated, as other abstracts are gener- 
ated from other concretes : the only difference being, that 
the organization of experiences has, in these cases, been going 
on throughout the entire evolution of intelligence. 

This synthesis is confirmed by analysis. Our consciousness 
of Space is a consciousness of co-existent positions. Any lim- 
ited portion of space can be conceived only by representing its 
limits as co-existing in certain relative positions ; and each of 
its imagined boundaries, be it line or plane, can be thought of 
in no other way than as made up of co-existent positions in 
close proximity. And since a position is not an entity — since 
the congeries of positions which constitute any conceived por- 
tion of space, and mark its bounds, are not sensible existences ; 
it follows that the co-existent positions which make up our 
consciousness of Space, are not co- existences in the full sense 
of the word (which implies realities as their terms), but are the 
blank forms of co- existences, left behind when the realities are 
absent ; that is, are the abstracts of co-existences. The 

experiences out of which, tLuring the evolution of intel- 
ligence, this abstract of all co- existences has been generated, 
arc experiences of individual positions as ascertained by touch ; 
and each of such experiences involves the resistance of an ob- 
ject touched, and the muscular tension which measures this 
resistance. By countless unlike muscular adjustments, involving 
unlike muscular tensions, different resisting positions are dis- 
closed ; and these, as they can be experienced in one order as 
readily as another, we regard as co-existing. But since, un- 
der other circumstances, the same muscular adjustments do 
not produce contact with resisting positions, there result the 
same states of consciousness, minus the resistances — blank 
forms of co-existence from which the co-existent objects before 



SPACE, TIME, MATTER, MOTION, AND FORCE. 165 

experienced arc absent And from a building up of these, too 
elaborate to be liere detailed, results tbat abstract of all rela- 
tions of co- existence which we call Space. It remains 
only to point out, as a thing which we must not forget, that 
the experiences from which the consciousness of Space arises, 
are experiences of force. A certain correlation of the muscu- 
lar forces we ourselves exercise, is the index of each position 
as originally disclosed to us ; and the resistance which makes 
us aware of something existing in that position, is an equi- 
valent of the pressure we consciously exert. Thus, experiences 
of forces variously correlated, are those from which our con- 
sciousness of Space is abstracted. 

That which we know as Space being thus shown, alike by 
its genesis and definition, to be purely relative, what are we 
to say of that which causes it ? Is there an absolute Space 
which relative Space in some sort represents ? Is Space in it- 
self a form or condition of absolute existence, producing in 
our minds a corresponding form or condition of relative exist- 
ence ? These are unanswerable questions. Our conception 
of Space is produced by some mode of the Unknowable ; and 
the complete unchangeableness of our conception of it simply 
implies a complete uniformity in the effects wrought by this 
mode of the Unknowable upon us. But therefore to call it a 
necessary mode of the Unknowable, is illegitimate. All we 
can assert is, that Space is a relative reality ; that our consci- 
ousness of this unchanging relative reality implies an absolute 
reality equally unchanging in so far as we are concerned ; 
and that the relative reality may be unhesitatingly accepted 
in thought as a valid basis for our reasonings ; which, when 
rightly carried on, will bring us to truths that have a like 
relative reality — the only truths which concern us or can 
possibly be known to us. 

Concerning Time, relative and absolute, a parallel argu- 
ment leads to parallel conclusions. These are too obvious to 
need specifying in detail. 



LOG SrACE, TIME, MATTER, MOTION, AND FORCE. 

§ 48. Our conception of Matter, reduced to its simplest shape, 
is that of co-existent positions that offer resistance; as con- 
trasted with our conception of Space, in which the co-existent 
positions offer no resistance. We think of Body as bounded 
by surfaces that resist ; and as made up throughout of parts . 
that resist. Mentally abstract the co- existent resistances, and 
the consciousness of Body disappears ; leaving behind it the 
consciousness of Space. And since the group of co-existing 
resistent positions constituting a portion of matter, is uniform- 
ly capable of giving us impressions of resistance in combina- 
tion with various muscular adjustments, according as we 
touch its near, its remote, its right, or its left side ; it results 
that as different muscular adjustments habitually indicate dif- 
ferent co- existences, we are obliged to conceive every portion 
of matter as containing more than one resistent position — that 
is, as occupying Space. Hence the necessity we are under of 
representing to ourselves the ultimate elements of Matter as 
being at once extended and resistent : this being the univer- 
sal form of our sensible experiences of Matter, becomes the 
form which our conception of it cannot transcend, however 
minute the fragments which imaginary subdivisions pro- 
duce. Of these two inseparable elements, the resist- 
ance is primary, and the extension secondary. Occupied ex- 
tension, or Body, being distinguished in consciousness from 
unoccupied extension, or Space, by its resistance, this attribute 
must clearly have precedence in the genesis of the idea. Such a 
conclusion is, indeed, an obvious corollary from that at which 
we arrived in the foregoing section. If, as was there contend- 
ed, our consciousness of Space is a product of accumulated ex- 
periences, partly our own but chiefly ancestral — if, as was 
pointed out, the experiences from which, our consciousness of 
Space is abstracted, can be received only through impressions 
of resistance made upon the organism ; the necessary inference 
is, that experiences of resistance being those from which the 
conception of Space is generated, the resistance-attribute of 
Matter must be regarded as primordial and the space-attribute 



SPACE, TIME, MATTER, MOTION, AND FORCE. 167 

as deri native. Whence it becomes manifest that our 

experience of force, is that out of which the idea of Matter is 
built. Matter as opposing our muscular energies, being im- 
mediately present to consciousness in terms of force ; and its 
occupancy of Space being known by an abstract of experiences 
originally given in terms of force ; it follows that forces, 
standing in certain correlations, form the whole content of 
our idea of Matter. 

Such being our cognition of the relative reality, what are 
we to say of the absolute reality ? We can only say that it 
is some mode of the Unknowable, related to the Matter we 
know, as cause to effect. The relativity of our cognition of 
Matter is shown alike by the above analysis, and by the con- 
tradictions which are evolved when we deal with the cogni- 
tion as an absolute one (§ 1G). But, as we have lately seen, 
though known to us only under relation, Matter is as real in 
the true sense of that word, as it woidd be could we know it 
out of relation ; and further, the relative reality which we 
know as Matter, is necessarily represented to the mind as 
standing in a persistent or real relation to the absolute real- 
ity. We may therefore deliver ourselves over with- 
out hesitation, to those terms of thought which experience has 
organized in us. We need not in our physical, chemical, 
or other researches, refrain from dealing with Matter as made 
up of extended and resistent atoms ; for this conception, ne- 
cessarily resulting from our experiences of Matter, is not less 
legitimate than the conception of aggregate masses as extend- 
ed and resistent. The atomic hypothesis, as well as the kindred 
hypothesis of an all-pervading ether consisting of molecules, is 
simply a necessary development of those universal forms which 
the actions of the Unknowable have wrought in us. The con- 
clusions logically worked out by the aid of these hypotheses, are 
sure to be in harmony with all others which these same forms 
involve, and will have a relative truth that is equally complete. 

§ 40. The conception of Motion as presented or represented 



168 SPACE, TIME, MATTER, MOTION, AND FORCE. 

in the developed consciousness, involves the conceptions of 
Space, of Time, and of Matter. A something that moves ; a 
series of positions occupied in succession ; and a group of co- 
existent positions united in thought with the successive ones 
— these are the constituents of the idea. And since, as we 
have seen, these are severally elaborated from experiences of 
force as given in certain correlations, it follows that from a 
further synthesis of such experiences, the idea of Motion is 
also elaborated. A certain other element in the idea, which 
is in truth its fundamental element, (namely, the necessity 
which the moving body is under to go on changing its posi- 
tion), results immediately from the earliest experiences of force. 
Movements of different parts of the organism in relation to 
each other, are the first presented in consciousness. These, 
produced by the action of the muscles, necessitate reactions 
upon consciousness in the shape of sensations of muscular ten 
sion. Consequently, each stretching-out or drawing- in of a 
limb, is originally known as a series of muscular tensions, 
, varying in intensity as the position of the limb changes. And 
this rudimentary consciousness of Motion, consisting of serial 
impressions of force, becomes inseparably united with the 
consciousness of Space and Time as fast as these are abstract- 
ed from further impressions of force. Or rather, out of this 
primitive conception of Motion, the adult conception of it i& 
developed simultaneously with the development of the con- 
ceptions of Space and Time : all three being evolved from the 
more multiplied and varied impressions of muscular tension 
and objective resistance. Motion, as we know it, is thus trace- 
able, in common with the other ultimate scientific ideas, to ex- 
periences of force. 

That this relative reality answers to some absolute reality, 
it is needful only for form's sake to assert. What has been 
said above, respecting the Unknown Cause which produces in 
us the effects called Matter, Space, and Time, will apply, on 
simply changing the terms, to Motion. 



SPACE, TIME, MATTER, MOTION, AND FORCE. 169 

§ 50. We come down then finally to Force, as the ultimate 
of ultimates. Though Space, Time, flatter, and Motion, are 
apparently all necessary data of intelligence, yet a psychologi- 
cal analysis (here indicated only in rude outline) shows us 
that these are either built up of, or abstracted from, experi- 
ences of Force. Matter and Motion, as we know them, are 
differently conditioned manifestations of Force. Space and 
Time, as we know them, are disclosed along with these differ- 
ent manifestations of Force as the conditions under which 
they are presented. Matter and Motion are concretes built 
up from the contents of various mental relations ; while Space 
and Time are abstracts of the forms of these various rela- 
tions. Deeper down than these, however, are the primordial 
experiences of Force, which, as occurring in consciousness 
in different combinations, supply at once the materials 
whence the forms of relations are generalized, and the re- 
lated objects built up. A single impression of force is 
manifestly receivable by a sentient being devoid of mental 
furms : grant but sensibility, with no established power of 
thought, and a force producing some nervous change, will 
still be presentable at the supposed seat of sensation. Though 
no single impression of force so received, could itself produce 
consciousness (which implies relations between different states), 
yet a multiplication of such impressions, differing in kind 
and degree, would give the materials for the establish- 
ment of relations, that is, of thought. And if such rela- 
tions differed in their forms as well as in their contents, 
the impressions of such forms would be organized simultane- 
ously with the impressions they contained. Thus all other 
modes of consciousness are derivable from experiences of 
Force ; but experiences *of Force are not derivable from any- 
thing else. Indeed, it needs but to remember that conscious- 
ness consists of changes, to see that the ultimate datum of con- 
sciousness must be that of which change is the manifestation ; 
and that thus the force by which we ourselves produce changes, 



170 SPACE, TIME, MATTER, MOTION, AND FORCE. 

and which serves to symbolize the cause of changes in general, 
is the final disclosure of analysis. 

It is a truism to say that the nature of this undecomposahle 
element of our knowledge is inscrutable. If, to use an algebraic 
illustration, we represent Matter, Motion, and Force, by the 
symbols x, y, and z ; then, we may ascertain the values of x 
and y in terms of z ; but the value of z can never be found : z 
is the unknown quantity which must for ever remain unknown ; 
for the obvious reason that there is nothing in which its value 
can be expressed. It is within the possible reach of our in- 
telligence to go on simplifying the equations of all phenomena, 
until the complex symbols which formulate them are reduced 
to certain functions of this ultimate symbol ; but when we 
have done this, we have reached that limit which eternally 
divides science from nescience. 

That this undecomposable mode of consciousness into 
which all other modes may be decomposed, cannot be itself 
the Power manifested to us through phenomena, has been 
already proved (§ 18). "We saw that to assume an identity 
of nature between the cause of changes as it absolutely exists, 
and that cause of change of which we are conscious in our own 
muscular efforts, betrays us into alternative impossibilities of 
thought. Force, as we know it, can be regarded only as a 
certain conditioned effect of the Unconditioned Cause — as the 
relative reality indicating to us an Absolute Reality by which 
it is immediately produced. And here, indeed, we see even 
more clearly than before, how inevitable is that transfigured 
realism to which sceptical criticism finally brings us round. 
Getting rid of all complications, and contemplating pure 
Force, we are irresistibly compelled by the relativity of our 
thought, to vaguely conceive some 'unknown force as the 
correlative of the known force. ISToumenon and phenome- 
non are here presented in their primordial relation as 
two sides of the same change, of which we are obliged 
to regard the last as no le&s real than the first. 



SPACE, TIME, MATTER, MOTION, AND FORCE. 171 

§ 51. Ill closing this exposition of the derivative data 
needed by Philosophy as the unifier of Science, we may 
properly glance at their relations to the primordial data, set 
forth in the last chapter. 

An Unknown Cause of the known effects which we call 
phenomena, likenesses and differences among these known 
effects, and a segregation of the effects into subject and 
object — these are the postulates without which we cannot 
think. Within each of the segregated masses of manifesta- 
tions, there are likenesses and differences involving se- 
condary segregations, which have also become indispensable 
postulates. The vivid manifestations constituting the non- 
ego do not simply cohere, but their cohesions have certain 
invariable modes ; and among the faint manifestations con- 
stituting the ego, which are products of the vivid, there 
exist corresponding modes of cohesion. These modes of co- 
hesion under which manifestations are invariably presented, 
and therefore invariably represented, we call, when contem- 
plated apart, Space and Time, and when contemplated along 
with the manifestations themselves, Matter and Motion. 
The ultimate natures of these modes are as unknown as is 
the ultimate nature of that which is manifested. But just 
the same warrant which we have for asserting that subject 
and object coexist, we have for asserting that the vivid 
manifestations we call objective, exist under certain constant 
conditions, that are symbolized by these constant conditions 
among the manifestations we call subjective. 



CHAPTER IV. 

THE INDESTRUCTIBILITY OF MATTER. 

§ 52. Not because the truth, is unfamiliar, is it needful 
here to say something concerning the indestructibility of 
Matter ; but partly because the symmetry of our argument 
demands the enunciation of this truth, and partly because 
the evidence on which it is accepted requires examination. 
Could it be shown, or could it with any rationality be even 
supposed, that Matter, either in its aggregates or in its 
units, ever became non-existent, there would be need either 
to ascertain under what conditions it became non-existent, 
or else to confess that Science and Philosophy are impos- 
sible. For if, instead of having to deal with fixed quantities 
and weights, we had' i; t deal with quantities and weights 
which were apt, wholly - in part, to be annihilated, there 
would be introduced an incalculable element, fatal to all 
positive conclusions. Clearly, therefore, the proposition 
that matter is indestructible must be deliberately con- 
sidered. 

So far from being admitted as a self-evident truth, this 
would, in primitive times, have been rejected as a self-evident 
error. There was once universally current, a notion that things 
could vanish to absolute nothing, or arise out of absolute 
nothing. If we any /ze early superstitions, or that faith in 
magic which was general in later times and even still sur- 
vives among the uncultured, we find one of its postulates to 
be, that by some potent spell Matter can be called out of non- 
entity, and can be made non-existent. If men did not believe 



THE INDESTRUCTIBILITY OF MATTER. 173 

this in the strict sense of the word (which would imply 
that the process of creation or annihilation was clearly repre- 
sented in consciousness), they still believed that they believed 
it ;. and how nearly, in their confused thoughts, the one was 
equivalent to the other, is shown by their conduct. 'Nov, in- 
deed, have dark ages and inferior minds alone betrayed this 
belief. The current theology, in its teachings respecting the 
beginning and end of the world, is clearly pervaded by it ; 
and it may be even questioned whether Shakespeare, in his 
poetical anticipation of a time when all things shall disap- 
pear and "leave not a wrack behind," was not under its in- 
fluence. The gradual accumulation of experiences, 
however, and still more the organization of experiences, has 
tended slowly to reverse this conviction ; until now, the doc- 
trine that Matter is indestructible has become a common- 
place. All the apparent proofs that something can come out 
of nothing, a wider knowledge has one by one cancelled. The 
comet that is suddenly discovered in the heavens and nightly 
waxes larger, is proved not to be a newly-created body, but a 
body that was until lately beyond the range of vision. The 
cloud which in the course of a few minxes forms in the sky, 
consists not of substance that ha? j-ist begun to be, but of 
substance that previously existed iij a more diffused and 
transparent form. And similarly with a crystal or precipi- 
tate in relation to the fluid depositing it. Conversely, the 
seeming annihilations of Matter tarn out, on closer observa- 
tion, to be only changes of state. It is found that the 
evaporated water, though it has become invisible, may be 
brought by condensation to its original shape. The dis- 
charged fowling-piece gives evidence that though the 
gunpowder has disappeared, there have ap ) ired in place 
of it certain gases, which, in assum' * a larger volume, 
have caused the explosion. Not, however, until 
the rise of quantitative chemfctry, could the conclusion 
suggested by such experiences be harmonized with all the 
facts. When, having ascertained not only the combina- 



174 THE INDESTRUCTIBILITY OF MATTER. 

tions formed by various substances, but also the proportions 
iu which they combine, chemists were enabled to account 
for the matter that had made its appearance or become in- 
visible, scepticism was dissipated. And of the general con- 
clusion thus reached, the exact analyses daily made, in which 
the same portion of matter is pursued through numerous 
disguises and finally separated, furnish never-ceasing con- 
firmations. 

Such has become the effect of this specific evidence, joined 
to that general evidence which the continued existence of 
familiar objects unceasingly gives us, that the Indestructi- 
bility of Matter is now held by many to be a truth of which 
the negation is inconceivable. 

§ 53. This last fact naturally raises the question, whether 
we have any higher warrant for this fundamental belief than 
the warrant of conscious induction. Before showing that 
we have a higher warrant, some explanations are needful. 

The consciousness of logical necessity, is the consciousness 
that a certain conclusion is implicitly contained in certain 
premises explicitly stated. If, contrasting a young child 
and an adult, we see that this consciousness of logical 
necessity, absent from the one is present in the other, we 
are taught that there is a growing up to the recognition of 
certain necessary truths, merely by the unfolding of the 
inherited intellectual forms and faculties. 

To state the case more specifically : — Before a truth 
can be known as necessary, two conditions must be fulfilled. 
There must be a mental structure capable of grasping the 
terms of the proposition and the relation alleged between 
them ; and there must be such definite and deliberate 
mental representation of these terms, as makes possible a 
clear consciousness of this relation. Non-fulfilment of either 
condition may cause non-recognition of the necessity of- the 
truth. Let us take cases. 

The savage who cannot count the fingers on one hand, 



THE INDESTRUCTIBILITY OP MATTER, 175 

can frame no definite thought answering to the statement 
that 7 and 5 are 12 ; still less can he frame the conscious- 
ness that no other total is possible. 

The boy adding up figures inattentively, says to himself 
that 7 and 5 are 11 ; and may repeatedly bring out a wroug 
result by repeatedly making this error. 

Neither the non-recognition of the truth that 7 and 5 
are 12, which in the savage results from undeveloped mental 
structure, nor the assertion, due to the boy's careless mental 
action, that they make 11, leads us to doubt the necessity of 
the relation between these two separately-existing numbers 
and the sum they make when existing together. Nor does 
failure from either cause to apprehend the necessity of this 
relation, make us hesitate to say that when its terms are 
distinctly represented in thought, its necessity will be seen ; 
and that, apart from any multiplied experiences, this neces- 
sity becomes cognizable when structures and functions 
are so far developed that groups of 7 and 5 and 12 can be 
intellectually grasped. 

Manifestly, then, there is a recognition of necessary 
truths, as such, which accompanies mental evolution. Along 
with acquirement of more complex faculty and more vivid 
imagination, there comes a power of perceiving to be neces- 
sary truths, what were before not recognized as truths at all. 
And there are ascending gradations in these recognitions. 
A boy who has intelligence enough to see that things 
which are equal to the same thing are equal to one another, 
may be unable to see that ratios which are severally equal 
to certain other ratios that are unequal to each other, are 
themselves unequal ; though to a more-developed mind this 
last axiom is no less obviously necessary than the first. 

All this which holds of logical and mathematical truths, 
holds, with change of terms, of physical truths. There are 
necessary truths in Physics for the apprehension of which, 
also, a developed and disciplined intelligence is required ; 
and before such intelligence arises, not only may there be 



176 THE INDESTRUCTIBILITY OE MATTER. 

failure to apprehend tlie necessity of them, but there may 
be vague beliefs in their contraries. Up to comparatively - 
recent times, all mankind were in this state of incapacity 
with respect to physical axioms ; and the mass of mankind 
are so still. Various popular notions betray inability to 
form clear ideas of forces and their relations, or careless- 
ness in thinking, or both. Effects are expected without 
causes of fit kinds ; or effects extremely disproportionate to 
causes are looked for ; or causes are supposed to end without 
effects.* But though many are incapable of grasping phy- 
sical axioms, it no more follows that physical axioms are 
not knowable a priori by a developed intelligence, than it 
follows that logical relations are not necessary, because un- 
developed intellects cannot perceive their necessity. 

It is thus with the notions which have been current 
respecting the creation and annihilation of Matter. In the 
first place, there has been an habitual confounding of two 
radically-different things — disappearance of Matter from 
that place where it was lately perceived, and passage of 
Matter from existence into non-existence. Only when there 
is reached a power of discrimination beyond that possessed 
by the uncultured, is there an avoidance of the confusion 
between vanishing from the range of perception, and 
vanishing out of space altogether ; and until this confusion 
is avoided, the belief that Matter can be annihilated readily 
obtains currency. In the second place, the currency of this 
belief continues so long as there is not such power of intro- 

* I knew a lady who contended that a dress folded up tightly, weighed 
more than when loosely folded up ; and who, under this belief, had 
her trunks made large that she might diminish the charge for freight ! 
Another whom I know, ascribes the feeling of lightness which accompanies 
vigour, to actual decrease of weight ; believes that by stepping gently, she 
can press less upon the ground ; and, when cross-questioned, asserts that, 
if placed in scales, she can make herself lighter by an act of will ! Various 
popular notions betray like states of mind — show, in the undisciplined, such 
inability to form ideas of forces and their relations, or such randomness in 
thinking, or both, as incapacitates them for grasping physical axioms, and 
makes them harbour numerous delusions respecting physical actions. 



THE INDESTRUCTIBILITY OF MATTER. 177 

spection that it can be seen what happens when the attempt 
is made to annihilate Matter in thought. Bat when, chirm q: 
mental evolution, the vague ideas arising in a nervous 
structure imperfectly organized, are replaced by the clear 
ideas arising in a definite nervous structure; this definite 
structure, moulded by experience into correspondence with 
external phenomena, makes necessary in thought the rela- 
tions answering to absolute uniformities in things. Hence, 
among others, the conception of the Indestructibility of 
Matter. 

For careful self-analysis shows this to be a datum of 
consciousness. Conceive the space before you to be cleared 
of all bodies save one. ISTow imagine the remaining one not 
to be removed from its place, but to lapse into nothing 
while standing in that place. You fail. The space which 
was solid you cannot conceive becoming empty, save by 
transfer of that which made it solid. What 

is termed the ultimate incompressibility of Matter, is an 
admitted law of thought. However small the bulk to 
which we conceive a piece of matter reduced, it is impos- 
sible to conceive it reduced into nothing. While we can 
represent to ourselves the parts of the matter as approxi- 
mated, we cannot represent to ourselves the quantity of 
matter as made less. To do this would be to imagine some 
of the constituent parts compressed into nothing; which 
is no more possible than to imagine compression of the 
whole into nothing. Our inability to conceive 

Matter becoming non-existent, is immediately consequent 
on the nature of thought. Thought consists in the establish- 
ment of relations. There can be no relation established, 
and therefore no thought framed, when one of the related 
terms is absent from consciousness. Hence it is impossible 
to think of something becoming nothing, for the same 
reason that it is impossible to think of nothing becoming 
something — the reason, namely, that nothing cannot become 
an object of consciousness. The annihilation of Matter 



178 TEE INDESTRUCTIBILITY OE MATTER. 

is unthinkable for the same reason that the creation of 
Matter is unthinkable. 

It must be added that no experimental verification of the 
truth, that Matter is indestructible, is possible without a 
tacit assumption of it. For all such, verification implies 
weighing, and weighing implies that the matter forming 
the weight remains the same. In other words, the proof 
that certain matter dealt with in certain ways is unchanged 
in quantity, depends on the assumption that other matter, 
otherwise dealt with, is unchanged in quantity. 

§ 54. That, however, which it most concerns us here 
to observe, is the nature of the perceptions by which the 
permanence of Matter is perpetually illustrated to us. 
These perceptions, under all their forms, amount simply to 
this — that the force which, a given quantity of matter exer- 
cises, remains always the same. This is the proof on which 
common sense and exact science alike rely. "When, 

for example, an object known to have existed years since is 
said to exist still, by one who yesterday saw it, his assertion 
amounts to this — that an object which in past time 
wrought on his consciousness a certain group of changes, 
still exists, because a like group of changes has been again 
wrought on his consciousness : the continuance of the 'power 
thus to impress him, he holds to prove the continuance of 
the object. Even more clearly do we see that force is our 
ultimate measure of Matter, in those cases where the shape 
of the Matter has been changed. A piece of gold given to 
an artizan to be worked into an ornament, and which when 
brought back appears to be less, is placed in the scales; 
and if it balances a much smaller weight than it did in its 
rough state, we infer that much has been lost either in 
manipulation or by direct abstraction. Here the obvious 
postulate is, that the quantity of Matter is finally de- 
terminable by the quantity of gravitative force it mani- 
fests. And this is the kind of evidence on which 



THE INDESTRUCTIBILITY OF MATTER. 179 

Science bases its alleged induction that Matter is in- 
destructible. Whenever a piece of substance lately visible 
and tangible, has been reduced to an invisible, intangible 
state, but is proved by the weight of the gas into which 
it has been transformed to be still existing; the assump- 
tion is that, though otherwise insensible to us, the amount 
of matter is the same if it still tends towards the Earth 
with the same force. Similarly, every case in which the 
weight of an element present in combination is inferred 
from the known weight of another element which it 
neutralizes, is a case in which the quantity of matter is 
expressed in terms of the quantity of chemical force it 
exerts ; and in which this specific chemical force is assumed 
to be the correlative of a specific gravitative force. 

Thus, then, by the Indestructibility of Matter, we really 
mean the indestructibility of the force with which Matter 
affects us. As we become conscious of Matter only through 
that resistance which it opposes to our muscular energy, so 
do we become conscious of the permanence of Matter only 
through the permanence of this resistance; either as im- 
mediately or as mediately proved to us. And this truth is 
made manifest not only by analysis of the a posteriori 
cognition, but equally so by analysis of the a priori one.* 

* Lest he should not hare ohserved it, the reader must he warned that the 
tercns " a priori truth " and " necessary truth," as used in this work, are to he 
interpreted not in the old sense, as implying- cognitions wholly independent 
of experiences, hut as implying cognitions that have heen rendered organic 
by immense accumulations of experiences, received partly by the individual, 
hut mainly by all ancestral individuals whose nervous systems he inherits. On 
referring to the Principles of Psychology (§§ 426 — 133), it will be seen that 
the warrant alleged for one of these irreversible ultimate convictions is that, 
on the hypothesis of Evolution, it represents an immeasurably-greater accumu- 
lation of experiences than can be acquired by any single individual. 



CHAPTER V. 

THE CONTINUITY OF MOTION. 

§ 55. Another general truth of the same order with the 
foregoing, must here be specified. Like the Indestructibility 
of Matter, the Continuity of Motion, or, more strictly, of 
that something which has Motion for one of its sensible 
forms, is a proposition on the truth of which depends the 
possibility of exact Science, and therefore of a Philosophy 
which unifies the results of exact Science. Motions, visible 
and invisible, of masses and of molecules, form the larger 
half of the phenomena to be interpreted ; and if such 
motions might either proceed from nothing or lapse into 
nothing, there could be no scientific interpretation of them. 

This second fundamental truth, like the first, is by no 
means self-evident to primitive men or to the uncultured 
among ourselves. Contrariwise, to undeveloped minds the 
opposite seems self-evident. The facts that a stone thrown 
up soon loses its ascending motion, and that after the blow 
its fall gives to the Earth, it remains quiescent, apparently 
prove that the principle of activity* which the stone mani- 
fested may disappear absolutely. Accepting, without criti- 
cism, the dicta of unaided perception, to the effect that 
adjacent objects put in motion soon return to rest, all men 
once believed, and most believe still, that motion can pass 
into nothing; and ordinarily does so pass. But 

the establishment of certain facts having an opposite impli- 

* Throughout this Chapter I use this phrase, not with any metaphysical 
meaning, but merely to avoid foregone conclusions. 



THE CONTINUITY OF MOTION. 181 

cation, led to inquiries -which have gradually proved these 
appearances to be illusive. The discovery that the planets 
revolve round the Sun with undiminishing speed, raised 
the suspicion that a moving body, when not interfered with, 
will go on for ever without change of velocity ; and sug- 
gested the question whether bodies which lose their motion, 
do not at the same time communicate as much motion to 
other bodies. It was a familiar fact that a stone would 
glide further over a smooth surface, such as ice, presenting 
no small objects to which it could part with its motion by 
collision, than over a surface strewn with such small objects ; 
and that a projectile would travel a far greater distance 
through a rare medium like air, than through a dense 
medium like water. Thus the primitive notion that moving 
bodies had an inherent tendency to lose their motion and 
finally stop — a notion of which the Greeks did not get rid, 
but which lasted till the time of Galileo — began to give way. 
It was further shaken by such experiments as those of 
Hooke, which proved that the spinning of a top continues 
long in proportion as it is prevented from communicating 
motion to surrounding matter. 

To explain specifically how modern physicists interpret 
all disappearances and diminutions of visible motion, would 
require more knowledge than I possess and more space than 
I can spare. Here it must suffice to state, generally, that 
the molar motion which disappears when a bell is struck by 
its clapper, reappears in the bell's vibrations and in the 
waves of air they produce ; that when a moving mass is 
stopped by coming against a mass that is immoveable, the 
>n which does not reappear in sound reappears as mole- 
cular motion ; and that, similarly, when bodies rub against 
one another, the motion lost by friction is gained in the 
motion of molecules. But one aspect of this general truth, 
as it is displayed to us in the motions of masses, we must 
carefully contemplate ; for otherwise the doctrine of the 
Continuity of Motion will be entirely misapprehended. 



182 THE CONTINUITY OF MOTION. 

§ 5G. As expressed "by Newton, the first law of motion is 
that " every body must persevere in its state of rest, or of 
uniform motion in a straight line, unless it be compelled to 
change that state by forces impressed upon it." 

With this truth may be associated the truth that a body 
describing a circular orbit round a centre which detains it 
by a tractive force, moves in that orbit with undiminished 
velocity. 

The first of these abstract truths is never realized in the 
concrete, and the second of them is but approximately 
realized. Uniform motion in a straight line, implies the 
absence of a resisting medium ; and it further implies the 
absence of forces, gravitative or other, exercised by neigh- 
bouring masses : conditions never fulfilled. So, too, the 
maintenance of a circular orbit by any celestial body, im- 
plies both that there are no perturbing bodies, and that there 
is a certain exact adjustment between its velocity and the 
tractive force of its primary : neither requirement ever 
being conformed to. In all actual orbits, sensibly elliptical 
as # they are, the velocity is sensibly variable. And along 
with great eccentricity there goes great variation. 

To the case of celestial bodies which, moving in eccentric 
orbits, display at one time little motion and at another 
much motion, may be joined the case of the pendulum. 
With speed now increasing and now decreasing, the pen- 
dulum alternates between extremes at which motion ceases. 

How shall we so conceive these allied phenomena as to 
express rightly the truth common to them ? The first law 
of motion, nowhere literally fulfilled, is yet, in a sense, 
implied by these facts which seem at variance with it. 
Though in a circular orbit the direction of the motion is 
continually being changed, yet the velocity remains un- 
changed. Though in an elliptical orbit there is now 
acceleration and now retardation, yet the average speed is 
constant through successive revolutions. Though the pen- 
dulum comes to a momentary rest at the end of each 



THE CONTINUITY OF MOTION. 183 

swing, and then begins a reverse motion ; yet the oscilla- 
tion, considered as a whole, is confcinnous : friction and 
atmospheric resistance being absent, this alternation of 
states will go on for ever. 

What, then, do these cases show ns in common? That 
which vision familiarizes ns with in Motion, and that which 
has thns been made the dominant element in onr conception 
of Motion, is not the element of which we can allege con- 
tinuity. If we regard Motion simply as change of place ; 
then the pendulum shows us both that the rate of this 
change may vary from instant to instant, and that, ceasing 
at intervals, it may be afresh initiated. 

But if what we may call the translation-element in Motion 
is not continuous, what is continuous ? If, watching like 
Galileo a swinging chandelier, we observe, not its iso- 
chronism, but the recurring reversal of its swing, we are 
impressed with the fact that though, at the end of each 
swing, the translation through space ceases, yet there is 
something which does not cease ; for the translation recom- 
mences in the opposite direction. And on remembering 
that when a violent push was given to the chandelier it 
described a larger arc, and was a longer time before the 
resistance of the air destroyed its oscillations, we are 
shown that what continues to exist during these oscilla- 
tions is some correlative of the muscular effort which put 
the chandelier in motion. The truth forced on our attention 
by these facts and inferences, is that translation through 
space is not itself an existence ; and that hence the cessation 
of Motion, considered simply as translation, is not the cessa- 
tion of an existence, but is the cessation of a certain sign of 
an existence — a sign occurring under certain conditions. 

Still there remains a difficulty. If that element in the 
chandelier's motion of which alone we can allege continuity, 
is the correlative of the muscular effort which moved the 
chandelier, what becomes of this element at either extreme 
of the oscillation ? Arrest the chandelier in the middle of 



184 THE CONTINUITY OF MOTION. 

its swing, and it gives a blow to the hand — exhibits some 
principle of activity such as muscular effort can give. But 
touch it at either turning point, and it displays no such 
principle of activity. This has disappeared just as much 
as the translation through space has disappeared. How, 
then, can it be alleged that though the Motion through 
space is not continuous, the principle of activity implied 
by the Motion is continuous ? 

Unquestionably the facts show that the principle of 
activity continues to exist under some form. When not 
perceptible it must be latent. How is it latent ? A clue 
to the answer is gained on observing that though the 
chandelier when seized at the turning point of its swing, 
gives no impact in the direction of its late movement, it 
forthwith begins to pull in the opposite direction ; and 
on observing, further, that its pull is great when the 
swing has been made extensive by a violent push. Hence 
the loss of visible activity at the highest point of the 
upward motion, is accompanied by the production of an 
invisible activity which generates the subsequent motion 
downwards. To conceive this latent activity gained as 
an existence equal to the perceptible activity lost, is not 
easy ; but we may help ourselves so to conceive it by con- 
sidering cases of another class. 

§ 57. When one who pushes against a door that has stuck 
fast, produces by great effort no motion, but eventually by 
a little greater effort bursts the door open, swinging it back 
against the wall and tumbling headlong into the room ; he 
has evidence that a certain muscular strain which did not 
produce translation of matter through space, was yet equiva- 
lent to a certain amount of such translation. Again, when 
a railway -porter gradually stops a detached carriage by 
pulling at the buffer, he shows us that (supposing friction, 
etc., absent) the slowly-diminished motion of the carriage 
over a certain space, is the equivalent of the constant back- 



THE CONTINUITY OF MOTION. 185 

ward strain put upon the carriage while it is travelling 
through that space. Carrying with us the conception 
thus reached, we will now consider a case which makes 
it more definite. 

When used as a plaything by boys, a ball fastened to 
the end of an india-rubber string yields a clear idea of 
the correlation between perceptible activity and latent ac- 
tivity. If, retaining one end of the string, a boy throws the 
ball from him horizontally, its motion is resisted by the 
increasing strain on the string; and the string, stretched 
more and more as the ball recedes, presently brings it to 
rest. "Where now exists the principle of activity which 
the moving ball displayed ? It exists in the strained thread 
of india-rubber. Under what form of changed mole- 
cular state it exists we need not ask. It suffices that the 
string is the seat of a tension generated by the motion of the 
ball, and equivalent to it. When the ball has been arrested, 
the stretched string begins to generate in it an opposite mo- 
tion ; and continues to accelerate that motion until the ball 
comes back to the point at which the stretching of the 
string commenced — a point at which, but for loss by atmos- 
pheric resistance and molecular redistribution, its velocity 
would be equal to the original velocity. Here the truth that 
the principle of activity, alternating between visible and 
invisible modes, does not cease to exist when the translation 
through space ceases to exist, is readily comprehensible ; 
and it becomes easy to understand the corollary that at each 
point in the path of the ball, the quantity of its perceptible 
activity, plus the quantity which is latent in the stretched 
string, yield a constant sum. 

Aided by this illustration we can, in a general way, con- 
ceive what happens between bodies connected with one 
another, not by a str.etched string, but by a traction exer- 
cised through what seems empty space. It matters not 
to our general conception that the intensity of this trac- 
tion varies in a totally-different manner : decreasing as 



186* THE CONTINUITY OP MOTION. 

the square of the distance increases, but being prac* 
tically constant for terrestrial distances. These differences 
being recognized, there is nevertheless to be recognized 
a truth common to both cases. The weight of some- 
thing held in the hand shows that there exists between 
one body in space and another, a strain : this downward 
pull, ascribed to gravity, affects the hand as it might be 
affected by a stretched elastic string. Hence, when a body 
projected upwards and gradually retarded by gravity, finally 
stops, we must regard the principle of activity manifested 
during its upward motion but disappearing at its turning- 
point, as having become latent in the strain between it and 
the Earth — a strain of which the quantity is to be con- 
ceived as the product of its intensity and the distance 
through which it acts. Carrying a step further our illus- 
tration of the stretched string, will elucidate this. To 
simulate the action of gravity at terrestrial distances, let 
us imagine that when the attached moving body has 
stretched the elastic string to its limit, say at the distance 
of ten feet, a second like string could instantly be tied to 
the end of the first and to the body, which, continuing 
its course, stretched this second string to an equal length, 
and so on with a succession of such strings, till the body 
was arrested. Then, manifestly, the quantity of the prin- 
ciple of activity which the moving body had displayed, 
but which has now become latent in the series of stretched 
strings, is measured by the number of such strings simi- 
larly stretched — the number of feet through which this 
constant strain has been encountered, and over which it 
still extends. Now though we cannot conceive the tractive 
force of gravity to be exercised in a like way — though 
the gravitative action, utterly unknown in nature, is pro- 
bably a resultant of actions pervading the ethereal medium; 
yet the above analogy suggests the belief that the prin- 
ciple of activity in a moving body arrested by gravity, 
has not ceased to exist, but has become so much imper- 



THE CONTINUITY OF MOTION. 187 

ceptible or latent activity in the medium occupying space, 
and that when the body falls, this is re-transformed into 
its equivalent of perceptible activity. If we conceive the 
process at all, we must conceive it thus : otherwise, we have 
to conceive that a power is changed into a space -relation, 
and this is inconceivable. 

Here, then, is the solution of the difficulty. The space- 
element of Motion is not in itself a thing. Change of position 
is not an existence, but the manifestation of an existence. 
This existence may cease to display itself as translation ; but 
it can do so only by displaying itself as strain. And this 
principle of activity, now shown by translation, now by 
strain, and often by the two together, is alone that which 
in Motion we can call continuous. 

§ 58. "What is this principle of activity ? Vision gives 
us no idea of it. If by a nrirror we cast the image of 
an illuminated object on to a dark wall, and then suddenly 
changing the attitude of the mirror, make the reflected 
image pass from side to side, the image, if recognized as 
such, does not raise the thought that there is present in it 
a principle of activity. Before we can conceive the presence 
of this, we must regard the impression yielded through 
our eyes as symbolizing something tangible — something 
which offers resistance. Hence the principle of activity 
as known by sight, is inferential : visible translation sug- 
gests by association the presence of a principle of activity 
which would be appreciable by our skin and muscles did 
we lay hold of the body. Evidently, then, this principle 
of activity which Motion shows us, is the objective corre- 
late of our subjective sense of effort. By pushing and pull- 
ing, we get feelings which, generalized and abstracted, yield 
our ideas of resistance and tension. Now displayed by 
changing position and now by unchanging strain, this prin- 
ciple of activity is ultimately conceived by us under the 
single form of its equivalent muscular effort. So that the 



188 THE CONTINUITY OF MOTION-. 

continuity of Motion, as well as the indestructibility of 
Matter, is really known to us in terms of Force. 

§ 59. And now we reach the essential truth to be here 
especially noted. All proofs of the Continuity of Motion 
involve the postulate that the quantity of force is constant. 
Observe what results when we analyze the reasonings by 
which the Continuity of Motion, as here understood, is shown. 

A particular planet can be identified only by its constant 
power to affect our visual organs in a special way. Fur- 
ther, such planet has not been seen to move by the astro- 
nomical observer ; but its motion is inferred from a com- 
parison of its present position with the position it before 
occupied. If rigorously examined, this comparison proves 
to be a comparison between the different impressions pro- 
duced on him by the different adjustments of his observing 
instruments. And, manifestly, the validity of all the in- 
ferences drawn from these likenesses and unlikenesses, 
depends on the truth of the assumption that these masses 
of matter, celestial and terrestrial, will continue to affect 
his senses in exactly the same ways under the same con- 
ditions; and that no changes in their powers of affecting 
him can have arisen without force having been expended 
in working those changes. Going a step further 

back x it turns out that difference in the adjustment of his 
observing instrument, and by implication in the planet, is 
meaningless until shown to correspond with a certain calcu- 
lated position which the planet must occupy, supposing that 
no motion has been lost. And if, finally, we examine the 
implied calculation, we find that it takes into account 
those accelerations and retardations which ellipticity of .the 
orbit involves, as well as those variations of velocity caused 
by adjacent planets — we find, that is,- that the motion is 
concluded to be indestructible not from the uniform velo- 
city of the planet, but from the constant quantity of motion 
exhibited when allowance is made for the motion communi- 



THE CONTINUITY OP MOTION. 189 

cated to, or received from, other celestial bodies. And 
when we ask how this communicated motion is estimated, 
we discover that the estimate is based on certain laws of 
force ; which laws, one and all, embody the postulate that 
force cannot be destroyed. Without the axiom that action 
and re-action are equal and opposite, astronomy could not 
make its exact predictions. 

Similarly with the a priori conclusion that Motion is con- 
tinuous. That which defies suppression in thought, is really 
the force which the motion indicates. We can imagine 
retardation to result from the action of external bodies. 
But to imagine this, is not possible without imagining 
abstraction of the force implied by the motion. We are 
obliged to conceive this force as impressed in the shape of 
reaction on the bodies that cause the arrest. And the 
motion communicated to them, we are compelled, to re- 
gard, not as directly communicated, but as a product of 
the communicated force. We can mentally diminish the 
velocity or space-element of motion, by diffusing the mo- 
mentum or force-element over a larger mass of matter; 
but the quantity of this force-element, which we regard as 
the cause of the motion,. is unchangeable in thought.* 

* It is needful to state that this exposition differs in its point of view from 
the expositions ordinarily given ; and that some of the words employed, such 
as strain, have somewhat larger implications. Unable to learn anything 
about the nature of Force, physicists have, of late years, formulated ulti- 
mate physical truths in such ways as often tacitly to exclude the conscious- 
ness of Force : conceiving cause, as Hume proposed, in terms of antecedence 
and sequence only. " Potential energy," for example, is defined as consti- 
tuted by such relations in space as permit masses to generate in one another 
certain motions, but as being in itself nothing. While this mode of con- 
ceiving the phenomena suffices for physical inquiries, it does not suffice for 
the purposes of philosophy. After referring to the Principles of Psychology, 
§§ 347 — 350, the reader will understand what I mean by saying that since 
our ideas of Body, Space, Motion, are derived from our ideas of muscular 
tension, which are the ultimate symbols into which all our other mental 
symbols are interpretable, to formulate phenomena in the proximate terms of 
Body, Space, Motion, while discharging from the concepts the consciousness 
of Force, is td acknowledge the superstructure while ignoring the foundation. 



CHAPTER VI. 

THE PERSISTENCE OF FORCE.* 

§ 60. In the foregoing two chapters, manifestations of 
force of two f undamentally-different classes have been dealt 
with — the force by which matter demonstrates itself to us 
as existing, and the force by which it demonstrates itself 
to ns as acting. 

Body is distinguishable from space by its power of affect- 
ing our senses, and, in the last resort, by its opposition to 
our efforts. We can conceive of body only by joining in 
thought extension and resistance : take away resistance, and 
there remains only space. In what way this force which 
produces space-occupancy is conditioned we do not know. 

* Some explanation of this title seems needful. In the text itself are given 
the reasons for using the word "force" instead of the word "energy;" 
and here I must say why I think "persistence " preferable to " conserva- 
tion." Some two years ago (this was written in 1861) I expressed to my 
friend Prof. Huxley, my dissatisfaction with the (then) current expression — 
" Conservation of Force : " assigning as reasons, first, that the word "con- 
servation " implies a conserver and an act of conserving ; and, second, that 
it does not imply the existence of the force before the particular manifesta- 
tion of it which is contemplated. And I may now add, as a further fault, 
the tacit assumption that, without some act of conservation, force would 
disappear. All these implications are at variance with the conception to be 
conveyed. In place of " conservation " Prof. Huxley suggested persistence. 
This meets most of the objections ; and though it may be urged against it 
that it does not directly imply pre-existence of the force at any time 
manifested, yet no other word less faulty in this respect can be found. In 
the absence of a word specially coined for the purpose, it seems the beat ; 
and as such I adopt it. 



THE PERSISTENCE OF FORCE. 191 

The mode of force which is revealed to us only by opposi- 
tion to our own powers, may be in essence the same with 
the mode of force which reveals itself by the changes it 
initiates in our consciousness. That the space a body 
occupies is in part determined by the degree of that activity 
possessed by its molecules which we call heat, is a familiar 
truth. Moreover, we know that such molecular re-arrange- 
ment as occurs in the change of water into ice, is accom- 
panied by an evolution of force which may burst the 
containing vessel and give motion to the fragments. 
Nevertheless, the forms of our experience oblige us to 
distinguish between two modes of force ; the one not a 
worker of change and the other a worker of change, actual 
or potential. The first of these — the space-occupying kind 
of force — has no specific name. 

For the second kind of force, distinguishable as that by 
which change is either being caused or will be caused if 
counterbalancing forces are overcome, the specific name 
now accepted is " Energy." That which in the last chapter 
was spoken of as perceptible activity, is called by physicists, 
" actual energy " ; and that which was called latent activity, 
is called " potential energy." While including the mode 
of activity shown in molar motion, Energy includes also 
the several modes of activity into which molar motion is 
transformable — heat, light, etc. It is the common name for 
the power shown alike in the movements of masses and 
in the movements of molecules. To our perceptions this 
second kind of force differs from the first kind as being 
not intrinsic but extrinsic. 

In aggregated matter as presented to sight and touch, 
this antithesis is, as above implied, much obscured. Espe- 
cially in a compound substance, both the potential energy 
locked up in the chemically-combined molecules, and the 
actual energy made perceptible to us as heat, complicate 
the manifestations of intrinsic force by the manifestations 
of extrinsic force. But the antithesis here partially hidden, 



192 THE PERSISTENCE OP FORCE. 

is clearly seen on reducing the data to their lowest terms 
— a unit of matter, or atom, and its motion. The force by 
which it exists is passive hut independent ; while the force 
by which it moves is active- but dependent on its past 
and present relations to other atoms. These two cannot 
be identified in our thoughts. For as it is impossible to 
think of motion without something that moves; so it is 
impossible to think of energy without something possess- 
ing the energy. 

While recognizing this fundamental distinction between 
that intrinsic force by which body manifests itself as 
occupying space, and that extrinsic force distinguished as 
energy ; I here treat of them together as being alike per- 
sistent. And I thus treat of them together partly for the 
reason that, in our consciousness of them, there is the same 
essential element. The sense of effort is our subjective 
symbol for objective force in general, passive and active. 
Power of neutralizing that which we know as our own 
muscular strain, is the ultimate element in our idea of body 
as distinguished from space ; and any energy which we can 
give to body, or receive from it, is thought of as equal to a 
certain amount of muscular strain. The two conscious- 
nesses differ essentially in this, that the feeling of effort 
common to the two is in the last case joined with conscious- 
ness of change of position, but in the first case is not.* 

There is, ho w ever, a further and more important reason 

* In respect to the fundamental distinction here made between the space- 
occupying kind of force, and the kind of force shown by various modes of 
activity, I am, as in the last chapter, at issue with some of my scientific 
friends. They do not admit that the conception of force is involved in the 
conception of a unit of matter. From the psychological point of view, how- 
ever, Matter, in all its properties, is the unknown cause of the sensations it 
produces in us ; of which the one which remains when all the others are 
absent, is resistance to our efforts— a resistance we are obliged to symbolize 
as the equivalent of the muscular force it opposes. In imagining a unit os 
matter we may not iguore this symbol, by which alone a unit of matter car 
be figured in thought as an existence. It is not allowable to speak as 
though there remained a conception of an existence when that conception 



THE PERSISTENCE OF FORCE. 192a 

for here dealing with the truth that Force under each of 
these forms persists. We have to examine its warrant. 

§ 61. At the risk of trying the reader's patience, we must 
reconsider the reasoning through which the indestructibility 
of Matter and the continuity of Motion are established, that 
we may see how impossible it is to arrive by parallel 
reasoning at the Persistence of Force. 

In all three cases the question is one of quantity : — does 
the Matter, or Motion, Or Force, ever diminish in quantity ? 
Quantitative science implies measurement ; and measure- 
ment implies a unit of measure. The units of measure 
from which all others of any exactness are derived, are units 
of linear extension. Our units of linear extension are the 
lengths of masses of matter, or the spaces between marks 
made on the masses ; and we assume these lengths, or these 
spaces between marks, to remain unchanged while the 
temperature is unchanged. From the standard-measure 
preserved at Westminster, are derived the measures for 
trigonometrical surveys, for geodesy, the measurement of 
terrestrial arcs, and the calculations of astronomical dis- 
tances, dimensions, etc., and therefore for Astronomy at 
large. Were these units of length, original and derived, 
irregularly variable, there could be no celestial dynamics ; 
nor any of that verification yielded by it of the constancy 
of the celestial masses or of their energies. Hence, per- 
sistence of the space-occupying species of force cannot 
be proved; for the reason that it is tacitly assumed in 
every experiment or observation by which it .is proposed 
to prove it. The like holds of the force distin- 

guished as energy. The endeavour to establish this by 
measurement, takes for granted both the persistence of the 

has been eviscerated — deprived of the element of thought by whifh it is 
distinguished from empty space. Divest the conceived unit of matter of the 
objective correlate to our subjective sense of effort, and the entire fabric of 
physical conceptions disappears. 



192& THE PERSISTENCE OP FORCE. 

intrinsic force by which body manifests itself as existing 
and the persistence of the extrinsic force by which 
body acts. For it is from these equal units of linear 
extension, through the medium of the equal-armed 
lever or scales, that we derive our equal units of weight, 
or gravitative force; and only by means of these can we 
make those quantitative comparisons by which the truths of 
exact science are reached. Throughout the investigations 
leading the chemist to the conclusion that of the carbon 
which has disappeared during combustion, no portion has 
been lost, what is his repeatedly-assigned proof? That 
afforded by the scales. In what terms is the verdict of the 
scales given ? In grains — in units of weight — in units of 
gravitative force. And what is the total content of the 
verdict ? That as many units of gravitative force as the 
carbon exhibited at first, it exhibits still. The validity of the 
inference, then, depends entirely upon the constancy of the 
units of force. If the force with which the portion of metal 
called a grain -weight, tends towards the Earth, has varied, 
the inference that matter is indestructible is vicious. 
Everything turns on the truth of the assumption that the 
gravitation of the weights is persistent; and of this no 
proof is assigned, or can be assigned. In the 

reasonings of the astronomer there is a like implication; 
from which we may draw the like conclusion. No problem 
in celestial physics can be solved without the assumption of 
some unit cf force. This unit need not be, like a pound or 
a ton, one of which we can take direct cognizance. It is 
requisite only that the mutual attraction which some two of 
the bodies concerned exercise at a given distance, should be 
taken as one ; so that the other attractions with which the 
problem deals, may be expressed in terms of this one. Such 
unit beiug assumed, the motions which the respective 
masses will generate in each other in a given time, are 
calculated ; and compounding these with the motions they 
already have, their places at the end of that ^ime are pre- 



THE PERSISTENCE OF FORCE. 192(7 

dieted. Tlie prediction is verified by observation. From 
this, either of two inferences may be drawn. Assuming 
the masses to be unchanged, their energies, actual and poten- 
tial, may be proved to be undiminished ; or assuming their 
energies to be undiminished, the masses may be proved un- 
changed. But the validity of one or other inference, de- 
pends wholly on the truth of the assumption that the unit 
of force is unchanged. Let it be supposed that the gravi- 
tation of the two bodies towards each other at the given 
distance, has varied, and the conclusions drawn are no longer 
true. Nor is it only in their concrete data that 

the reasonings of terrestrial and celestial phys'cs assume the 
Persistence of Force. The equality of action and reaction 
is taken for granted from beginning to end of either argu- 
ment ; and to assert that action and reaction are equal 
and opposite, is to assert that Force is persistent. The 
allegation really amounts to this, that there' cannot be 
an isolated force beginning and ending in nothing; but 
that any force manifested, implies an equal antecedent force 
from which it is derived, and against which it is a reaction. 
"We might indeed be certain, even in the absence of any 
such analysis as the foregoing, that there must exist some 
principle which, as being the basis of science, cannot be 
established by science. All reasoned-out conclusions what- 
ever must rest on some postulate. As before shown (§ 23), 
we cannot go on merging derivative truths in those wider 
and wider truths from which they are derived, without 
reaching at last a widest truth which can be merged in no 
other, or derived from no other. And whoever contem- 
plates the relation in which it stands to the truths of science 
in general, will see that this truth transcending demonstra- 
tion is the Persistence of Force. 

§ 62. But now what is the force of which we predi- 
cate persistence ? It is not the force we are immediately 
conscious of in our own muscular efforts ; for this does 



102(1 THE PERSISTENCE OP FOKCE. 

not persist. As soon as an outstretched limb is relaxed, 
the sense of tension disappears. True, we assert that in the 
stone thrown or in the weight lifted, is exhibited the effect 
of this muscular tension; and that the force which has 
ceased to be present in our consciousness, exists elsewhere. 
But it does not exist elsewhere under any form cognizable 
by us. In § 18 we saw that though, on raising an object 
from the ground, we are obliged to think of its down- 
ward pull as equal and opposite to our upward pull ; and 
though it is impossible to represent these as equal without 
representing them as like in kind ; yet, since their likeness 
in kind would imply in the object a sensation of muscular 
tension, which cannot be ascribed to it, we are compelled to 
admit that force as it exists out of our consciousness, is not 
force as we know it. Hence the force of which we assert 
persistence is that Absolute Force of which we are indefi- 
nitely conscious as the necessary correlate of the force we 
know. By the Persistence of Force, we really mean the 
persistence of some Cause which transcends our know- 
ledge and conception. In asserting it we assert an Uncon- 
ditioned Reality, without beginning or end. 

Thus, quite unexpectedly, we come down once more to 
that ultimate truth in which, as we saw, Religion and 
Science coalesce. On examining the data underlying a 
rational Theory of Things, we find them all at last re- 
solvable into that datum without which consciousness was 
shown to be impossible — the continued existence of an Un- 
knowable as the necessary correlative of the Knowable. 

The sole truth which transcends experience by underlying 
it, is thus the Persistence of Force. This being the basis 
of experience, must be the basis of any scientific organiza 
tion of experiences. To this an ultimate analysis brings 
us down ; and on this a rational synthesis must build up. 



CHAPTER TIL 

THE PERSISTENCE OF RELATIONS AMONG FORCE?. 

§ Go. The first deduction to be drawn from the ultimate 
universal truth that force persists, is that the re- 
lations among forces persist. Supposing a given mani- 
festation of force, under a given form and given condi- 
tions, be either preceded by or succeeded by some other 
manifestation, it must, in all cases where the form and 
conditions are the same, be preceded by or succeeded by 
such other manifestation. Every antecedent mode of the 
Unknowable must have an invariable connexion, quantitative 
and qualitative, with that mode of the Unknowable which 
we call its consequent. 

For to say otherwise is to deny the persistence of force. 
If in any two cases there is exact likeness not only between 
those most conspicuous antecedents which we distinguish 

the causes, but also between those accompanying antece- 
dents which we call the conditions, we cannot affirm that 
the effects will differ, without affirming either that some 
force has come into existence or that some force has ceased 
to exist. If the cooperative forces in the one case are 
equal to those in the other, each to each, in distribution and 
amount ; then it is impossible to conceive the product of 
their joint action in the one case as unlike that in the other, 
without conceiving one or more of the forces to have in- 
creased or diminished in quantity ; and this is conceiving 
that force is not persistent. 
10 



194 THE PERSISTENCE OP RELATIONS AMONG FORCES. 

To impress tlio truth, here enunciated under its most 
abstract forrn, some illustrations will be desirable. 

§ G4. Let two equal bullets be projected with equal 
forces ; then, in equal times, equal distances must be tra- 
velled by them. The assertion that one of them will describe 
an assigned space sooner than the other, though their 
initial momenta were alike and they have been equally 
resisted (for if they are unequally resisted the antecedents 
differ) is an assertion that equal quantities of force have not 
done equal amounts of work; and this cannot be thought with- 
out thinking that some force has disappeared into nothing or 
arisen out of nothing. Assume, further, that during 

its flight, one of them has been drawn by the Earth a certain 
number of inches out of its original line of movement ; then 
the other, which has moved the same distance in the same 
time, must have fallen just as far towards the Earth. 
No other result can be imagined without imagining 
that equal attractions acting for equal times, have pro- 
duced unequal effects; which involves the inconceivable 
proposition that some action has been created or anni- 
hilated. Again, ' one of the bullets having pene- 
trated the target to a certain depth, penetration by 
the other bullet to a smaller depth, unless caused by 
altered shape of the bullet or greater local density in the 
target, cannot be mentally represented. Such a modifica- 
tion of the consequents without modification of the ante- 
cedents, is thinkable only through the impossible thought 
that something has become nothing or nothing has become 
something. 

It is thus not with sequences only, but also with simul- 
taneous changes and permanent co-existences. Given 
charges of powder alike in quantity and quality, fired from 
barrels of the same structure, and propelling bullets of 
equal weights, sizes, and forms, similarly rammed down ; 
and it is a necessary inference that the concomitant actions 



THE PERSISTENCE OP RELATIONS AMONG FORCES. 195 

which make up the explosion,, will bear to one another like 
relations of quantity and quality in the two cases. The pro- 
portions among the different products of combustion will be 
equal. The several amounts of force taken up in giving 
momentum to the bullet, heat to the gases, and sound on 
their escape, will preserve the same ratios. The quantities 
of light and smoke in the one case will be what they are in 
the other; and the two recoils will be alike. For no dif- 
ference of proportion, or no difference of relation, among these 
concurrent phenomena can be imagined as arising*, without 
imagining such difference of proportion or relation as arising 
uncaused — as arising by the creation or annihilation of 
force. 

That which here holds between two cases must hold 
among any number of cases ; and that which here holds 
between antecedents and consequents that are comparatively 
simple, must hold however involved the antecedents become 
and however involved the consequents become. 

§ Go. Thus what we call uniformity of law, resolvable as 
we find it into the persistence of relations among forces, is 
an immediate corollary from the persistence of force. The 
general conclusion that there exist constant connexions 
among phenomena, ordinarily regarded as an inductive 
conclusion only, is really a conclusion deducible from the 
ultimate datum of consciousness. Though, in saying this, we 
seem to be illegitimately inferring that what is true of 
the ego is also true of the non-ego ; yet here this inference is 
legitimate. For that which we thus predicate as holding in 
common of ego and non-ego, is that which they have in 
common as being both existences. The assertion of an exist- 
ence beyond consciousness, is itself an assertion that there is 
something beyond consciousness which persists ; for persist- 
ence is nothing more than continued existence, and existence 
cannot be thought of as other than continued. And we 
t persistence of this something beyond conscious- 



196 THE PERSISTENCE OP RELATIONS AMONG FORCES. . 

ness, without asserting that the relations among its mani- 
festations are persistent. 

That uniformity of law thus follows inevitably from the 
persistence of force, will become more and more clear as wo 
advance. The next chapter will indirectly supply abundant 
illustrations of it. 



CHAPTER. Vin. 

THE TRANSFORMATION AND EQUIVALENCE OF FORCES, 

§ 6(j When, to tlie unaided senses, Science began to add 
supplementary senses in the shape of measuring instruments, 
men began to perceive various phenomena which eyes and 
Angers could not distinguish. Of known forms of force, 
minuter manifestations became appreciable ; and forms of 
force before unknown were rendered cognizable and measure- 
able. Where forces had apparently ended in nothing, and 
bad been carelessly supposed to have actually done so, instru- 
mental observation proved that effects had in every instance 
been produced : the forces reappearing in new shapes. 
Hence there has at length arisen the inquiry whether the 
force displayed in each surrounding change, does not in the 
act of expenditure undergo metamorphosis into an equivalent 
amount of some other force or forces. And to this inquiry 
experiment is giving an affirmative answer, which becomes 
daily more decisive. Meyer, Joule, Grove and Helmholtz 
are more than any others to be credited with the clear enunci- 
ation of this doctrine. Let us glance at the evidence on 
which it rests. 

Motion, wherever wc can directty trace its genesis, we find 
to pre-exist as some other mode of force. Our own volun- 
tary acts have always certain sensations of muscular 
tension as their antecedents. When, as in letting fall a re- 
laxed limb, wc are conscious of a bodily movement requiring 
no effort, the explanation is that the effort was exerted in 



198 THE TRANSFORMATION AND EQUIVALENCE OF FORCES. 

raising the limb to the position whence it fell. In this case, 
as in the case of an inanimate body descending to the Earth, 
the force accumulated hj the downward motion is just equal 
to the force previously expended in the act of eleva- 
tion. Conversely, Motion that is arrested produces, 
under different circumstances, heat, electricity, magnetism, 
light. From the warming of the hands by rubbing them 
together, up to the ignition of a railway-brake by intense 
friction — from the lighting of detonating powder by percus- 
sion, up to the setting on fire a block of wood by a few blows 
from a steam-hammer ; we have abundant instances in which 
heat arises as Motion ceases. It is uniformly found, that the 
heat generated is great in proportion as the Motion lost is 
great ; and that to diminish the arrest of motion, by di- 
minishing the friction, is to diminish the quantity of heat 
evolved. The production of electricity by Motion is illus- 
trated equally in the boy's experiment with rubbed sealing- 
wax, in the common electrical machine, and in the apparatus 
for exciting electricity by the escape of steam. Wherever 
there is friction between heterogeneous bodies, electrical dis- 
turbance is one of the consequences. Magnetism may result 
from Motion either immediately, as through percussion on 
iron, or mediately as through electric currents previously 
generated by Motion. And similarly, Motion may create 
light ; either directly, as in the minute incandescent frag- 
ments struck off by violent collisions, or indirectly, as 
through the electric spark. " Lastly, Motion may be again 
reproduced hj the forces which have emanated from Motion ; 
thus, the divergence of the electrometer, the revolution of 
the electrical wheel, the deflection of the magnetic needle, 
are, when resulting from frictional electricity, palpable move- 
ments reproduced by the intermediate modes of force, which 
have themselves been originated by motion." 

That mode of force which we distinguish as Heat, is now 
generally regarded by physicists as molecular motion — not 
motion as displayed in the changed relations of sensible 



THE TRANSFORMATION AND EQUIVALENCE OP FORCES. 199 

masses to each, other, but as occurring among the units of 
which such sensible masses consist. If we cease to think of 
Heat as that particular sensation given to us by bodie3 in 
certain conditions, and consider the phenomena otherwise 
presented by these bodies, we find that motion, either in 
them or in surrounding bodies, or in both, is all that 
we have evidence of. With one or two exceptions which are 
obstacles to every theory of Heat, heated bodies expand ; and 
expansion can be interpreted only as a movement of the units 
of a mass in relation to each other. That so-called radia- 
tion through which anything of higher temperature than 
things around it, communicates Heat to them, is clearly a 
species of motion. Moreover, the evidence afforded by the 
thermometer that Heat thus diffuses itself, is simply a move- 
ment caused in the mercurial column. And that the molecular 
motion which we call Heat, may be transformed into visible 
motion, familiar proof is given by the steam-engine ; in 
which " the piston and all its concomitant masses of matter 
are moved by the molecular dilatation of the vapour of 
water." Where Heat is absorbed without apparent 

result, modern inquiries show that decided though unob- 
trusive changes are produced : as on glass, the molecular 
state of which is so far changed by heat, that a polarized ray 
of light passing through it becomes visible, which it does not 
do when the glass is cold ; or as on polished metallic surfaces, 
which are so far changed in structure by thermal radiations 
from objects very close to them, as to retain permanent im- 
pressions of such objects. The transformation of Heat into 
electricity, occurs when dissimilar metals touching each other 
are heated at the point of contact : electric currents being so 
induced. Solid, incombustible matter introduced into heated 
gas, as lime into the oxy-hydrogen flame, becomes incande- 
scent ; and so exhibits the conversion of Heat into light. 
The production of magnetism by Heat, if it cannot be proved 
to take place directly, may be proved to take place indirectly 
through the medium of electricity. And through the same 



LOO THE TRANSFORMATION AND EQUIVALENCE OF FORCES. 

medium may be established the correlation of Heat and 
chemical affinity— a correlation which is indeed implied by 
the marked influence that Heat exercises on chemical com- 
position and decomposition. 

The transformations of Electricity into other modes of 
force, are still more clearly demonstrable. Produced b.y the 
motion of heterogeneous bodies in contact, Electricity, through 
attractions and repulsions, will immediately reproduce motion 
in neighbouring bodies. Now a current of Electricity gener- 
ates magnetism in a bar of soft iron ; and now the rotation 
of a permanent magnet generates currents of Electricity. 
Here we have a battery in which from the play of chemical 
affinities an electric current results ; and there, in the 
adjacent cell, we have an electric current effecting chemical 
decomposition. In the conducting wire we witness the 
transformation of Electricity into heat ; while in electric 
sparks and in the voltaic arc we see light produced. Atomic 
arrangement, too, is changed by Electricity : as instance 
the transfer of matter from pole to pole of a battery ; the 
fractures caused by the disruptive discharge ; the formation 
of crystals under the influence of electric currents. And 
whether, conversely, Electricity be or be not directly gener- 
ated by re- arrangement of the atoms of matter, it is at any 
rate indirectly so generated through the intermediation of 
magnetism. 

How from Magnetism the other physical forces result, 
must be next briefly noted — briefly, because in each succes- 
sive case the illustrations become in great part the obverse 
forms of those before given. That Magnetism produces 
motion is the ordinary evidence we have of its existence. In 
the magneto- electric machine we see a rotating magnet 
evolving electricity. And the electricity so evolved may 
immediately after exhibit itself as heat, light, or chemical 
affinity. Faraday's discovery of the effect of Magnetism on 
polarized light, as well as the discovery that change of mag- 
netic state is accompanied by heat^ po>nt to further like con- 



THE TRANSFORMATION AND EQUIVALENCE OF FORCES. 201 

nexions. Lastly, various experiments show that the .mag- 
netization of a body alters its internal structure ; and that 
conversely, the alteration of its internal structure, as by 
mechanical strain, alters its magnetic condition. 

Improbable as it seemed, it is now proved that from Light 
also may proceed the like variety of agencies. The solar rays 
change the atomic arrangements of particular crj^stals. 
Certain mixed gases, which do not otherwise combine, com- 
bine in the sunshine. In some compounds Light pro- 
duces decomposition. Since the inquiries of photographers 
have drawn attention to the subject, it has been shown that 
"a vast number of substances, both elementary and com- 
pound, are notably affected by this agent, even those ap- 
parently the most unalterable in character, such as metals." 
And when a daguerreotype plate is connected with a proper 
apparatus "we get chemical action on the plate, electricity 
circulating through the wires, magnetism in the coil, heat in 
the helix, and motion in the needles." 

The genesis of all other modes of force from Chemical 
Action, scarcely needs pointing out. The ordinary accom- 
paniment of chemical combination is heat ; and when the 
affinities are intense, light also is, under fit conditions, pro- 
duced. Chemical changes involving alteration of bulk, cause 
motion, both in the combining elements and in adjacent 
masses of matter : witness the propulsion of a bullet by the 
explosion of gun-powder. In the galvanic battery we see 
electricity resulting from chemical composition and decom- 
position. While through the medium of this electricity, 
Chemical Action produces magnetism. 

These facts, the larger part of which are culled from Mr. 
Grove's work on " The Correlation of Physical Forces," show 
us that each force is transformable, directly or indirectly, 
into the others. In every change Force undergoes meta- 
morphosis ; and from the new form or forms it assumes, may 
subsequently result either the previous one or any of the 
rest, in endless variety of order and combination. It is 



202 THE TRANSFORMATION AND EQUIVALENCE OP FORCES. 

further becoming manifest that the physical forces stand not 
simply in qualitative correlations with each other, but also in 
quantitative correlations. Besides proving that one mode of 
force may be transformed into another mode, experiments 
illustrate the truth that from a definite amount of one, defi- 
nite amounts of others always arise. Ordinarily it is in- 
deed difficult to show this ; since it mostly happens that the 
transformation of any force is not into some one of the rest 
but into several of them : the proportions being determined 
by the ever-varying conditions. But in certain cases, posi- 
tive results have been reached. Mr. Joule has ascertained 
that the fall of 772 lbs. through one foot, will raise the 
temperature of a pound of water one degree of Fahrenheit. 
The investigations of Dulong, Petit and Neumann, have 
proved a relation in amount between the affinities of combrn-- 
ing bodies and the heat evolved during their combination. Be- . 
tween chemical action and voltaic electricity, a quantitative 
connexion has also been established : Faraday's experiments 
implying that a specific measure of electricity is disengaged 
by a given measure of chemical action. The well- determined 
relations between the quantities of heat generated and water 
turned into steam, or still better the known expansion pro- 
duced in steam by each additional degree of heat, may be 
cited in further evidence. Whence it is no longer doubted 
that among the several forms which force assumes, the 
quantitative relations are fixed. The conclusion tacitly 
agreed on by physicists, is, not only that the physical forces 
undergo metamorphoses, but that a certain amount of each is 
the constant equivalent of certain amounts of the others. 

§ G7. Everywhere throughout the Cosmos this truth must 
invariably hold. Every successive change, or group of 
changes, going on in it, must be due to forces affiliable on 
the like or unlike forces previously existing ; while from the 
forces exhibited in such change or changes must be derived 
others more or less transformed. And besides recognizing 



THE TRANSFORMATION AND EQUIVALENCE OP FORCES, 203 

fcliis necessary linking of the forces at .any time manifested, 
with, those preceding and succeeding them, we must 
recognize the amounts of these forces as determinate — as 
necessarily producing such and such quantities of results, 
and as necessarily limited to those quantities. 

That unification of knowledge which is the business of 
Philosophy, is but little furthered by the establishment of 
this truth under its general form. "VYe must trace it out 
under its leading special forms. Changes, and the accom- 
panying transformations of forces, are everywhere in pro- 
gress, from the movements of stars to the currents of our 
thoughts; and to comprehend, in any adequate way, the 
meaning of the great fact that forces, unceasingly metamor- 
phosed, are nowhere increased or decreased, it is requisite 
for us to contemplate the various orders of changes going on 
around, for the purpose of ascertaining whence arise the 
forces they imply and what becomes of these forces. Of 
course if answerable at all, these questions can be answered 
only in the rudest way. We cannot hope to establish 
equivalence among the successive manifestations of force. 
The most we can hope is to establish a qualitative correla- 
tion that is indefinitely quantitative — quantitative to the 
extent of involving something like a due proportion between 
causes and effects. 

Let us, with the view of trying to do this, consider in 
succession the several classes of phenomena which the several 
concrete sciences deal with. 

§ GS. The antecedents of those forces which our Solar 
System displays, belong to a past of which we can never have 
anything but inferential knowledge ; and at present we cannot 
be said to have even this. Numerous and strong as are the 
reasons for believing the Nebular Hypothesis, we cannot yet 
regard it as more than an hypothesis. If, however, we 
a:sume that the matter composing the Solar System once 
existed in a diffused state, we have, in the gravitation of its 



204 THE TRANSFORMATION AND EQUIVALENCE OF FOECE3. 

parts, a force adequate to produce the motions now going 
on. 

Masses of precipitated nebulous matter, moving towards 
their common centre of gravity through the resisting medium 
from which they were precipitated, will inevitably cause a 
general rotation, increasing in rapidity as the concentration 
progresses. So far as the evidence carries us, we perceive 
some quantitative relation between the motions so generated 
and the gravitative forces expended in generating them. 
The planets formed from that matter which has travelled the 
shortest distance towards the common centre of gravity, 
have the smallest velocities. Doubtless this is explicable on 
the teleological hypothesis ; since it is a condition to equi- 
librium. But without insisting that this is beside the ques- 
tion, it will suffice to point out that the like cannot be said 
of the planetary rotations. No such final cause can be 
assigned for the rapid axial movement of Jupiter and Saturn, 
or the slow axial movement of Mercury. If, however, in 
pursuance of the doctrine of transformation, we look for the 
antecedents of these gyrations which all planets exhibit, the 
nebular hypothesis furnishes us with antecedents which bear 
manifest quantitative relations to the motions displayed. 
For the planets that turn on their axes with extreme 
rapidity, are those having great masses and large orbits — 
those, that is, of which the once diffused elements moved to 
their centres of gravity through immense spaces, and so 
acquired high velocities. "While, conversely, the planets 
which rotate with the smallest velocities, are those formed 
out of the smallest nebulous rings — a relation still better 
shown by satellites. 

" But what," it may be asked, " has in such case become 
of all that motion which brought about the aggregation oi 
this diffused matter into solid bodies ? " The answer is that 
it has been radiated in the form of heat and light ; and this 
answer the evidence, so far as it goes, confirms. Geologists 
conclude that the heat of the Earth's still molten nucleus is 



THE TRANSFORMATION AND EQUIVALENCE OE FORCES. 205 

bat a remnant of the heat which once made molten tho 
entire Earth. The monntainons surfaces of the Moon and 
of Venus (which alone are near enough to he scrutinized), 
indicating, as they do, crusts that have, like our own, been 
corrugated by contraction, imply that these bodies too have 
undergone refrigeration. Lastly, we have in the Sun a still- 
continued production of this heat and light, which must 
result from the arrest of diffused matter moving towards a 
common centre of gravity. Here also, as before, a 

quantitative relation is traceable. Among the bodies which 
make up the Solar System, those containing comparatively 
small amounts of matter whose centripetal motion has been 
destroyed, have already lost nearly all the produced heat : a 
result which their relatively larger surfaces have facilitated. 
But the Sun, a thousand times as great in mass as the 
largest planet, and having therefore to give off an enormously 
greater quantity of heat and light due to arrest of moving 
matter, is still radiating with great intensity. 

§ GO. If we inquire the origin of those forces which have 
wrought the surface of our planet into its present shape, we 
find them traceable to the primordial source just assigned. 
Assuming the solar system to have arisen as above supposed, 
then geologic changes are either direct or indirect results 
of the unexpended heat caused by nebular condensation. 
These changes are commonly divided into igneous and 
aqueous — heads under which we may most conveniently 
consider them. 

All those periodic disturbances which we call earthquakes, 
all those elevations and subsidence? which they severally 
produce, all those accumulated effects of many such eleva- 
tions and subsidences exhibited in ocean-basins, islands, con- 
tinents, table-lands, mountain -chains, and all those forma- 
tions which are distinguished as volcanic, geologists now 
regard as modifications of the Earth's crust produced by the 
still-molten matter occupying its interior. However unten- 



206 THE IRANSFOflMATION AND EQUIVALENCE OP FORCES. 

able may be the details of M. Elie de Beaumont's theory, 
there is good reason to accept the general proposition that 
the disruptions and variations of level which take place at 
intervals on the terrestrial surface, are due to the progressive 
collapse of the Earth's solid envelope upon its cooling and 
contracting nucleus. Even supposing that volcanic erup- 
tions, extrusions of igneous rock, and upheaved mountain- 
chains, could be otherwise satisfactorily accounted for, which 
they cannot ; it would be impossible otherwise to account for 
those wide-spread elevations and depressions whence conti- 
nents and oceans result. The conclusion to be drawn is, 
then, that the forces displayed in these so-called igneous 
changes, are derived positively or negatively from the unex- 
pended heat of the Earth's interior. Such phenomena as the 
fusion or agglutination of sedimentary deposits, the warming 
of springs, the sublimation of metals into the fissures where 
we find them as ores, may be regarded as positive results of 
this residuary heat ; while fractures of strata and alterations 
of level are its negative results, since they ensue on its escape. 
The original cause of all these effects is still, however, as it 
has been from the first, the gravitating movement of the 
Earth's matter towards the Earth's centre ; seeing that to 
this is due both the internal heat itself and the collapse 
which takes place as it is radiated into space. 

When we inquire under what forms previously existed the 
force which works out the geological changes classed as 
aqueous, the answer is less obvious. The effects of rain, of 
rivers, of winds, of waves, of marine currents, do not mani- 
festly proceed from one general source. Analysis, neverthe- 
less, proves to us that they have a common genesis. If we 
ask, — Whence comes the power of the river-current, bearing 
sediment down to the sea ? the reply is, — The gravitation of 
water throughout the tract which this river drains. If we 
ask, — How came the water to be dispersed over this tract ? the 
reply is, — It fell in the shape of rain. If we ask, — How came 
the rain to be in that position w T hence it fell ? the reply is, 



THE TRANSFORMATION AND EQUIVALENCE OF FORCES. 207 

—The vapour from which it was condensed was drifted there 
by the winds. If we ask, — How came this vapour to be at 
that elevation ? the reply is, — It was raised by evaporation. 
And if we ask, — What force thus raised it ? the reply is, — 
The sun's heat. Just that amount of gravitative force which 
the sun's heat overcame in raising the atoms of water, is 
given out again in the fall of those atoms to the same level. 
ITence the denudations effected by rain and rivers, during 
the descent of this condensed vapour to the level of the sea, 
are indirectly due to the sun's heat. Similarly with the 
winds that transport the vapours hither and thither. Con- 
sequent as atmospheric currents are on differences of tempera- 
ture (either general, as between the equatorial and polar 
regions, or special as between tracts of the Earth's surface of 
unlike physical characters) all such currents are due to that 
source from which the varying quantities of heat proceed. 
And if the winds thus originate, so too do the waves raised 
by them on the sea's surface. Whence it follows that what- 
ever changes waves produce — the wearing away of shores, 
the breaking down of rocks into shingle, sand, and mud — 
are also traceable to the solar rays as their primary cause. 
The same may be said of ocean-currents. Generated as the 
larger ones are by the excess of heat which the ocean in 
tropical climates continually acquires from the Sun ; and 
generated as the smaller ones are by minor local differences 
in the quantities of solar heat absorbed ; it follows that the 
distribution of sediment and other geological processes which 
these marine currents effect, are affiliable upon the force 
which the sun radiates. The only aqueous agency otherwise 
originating is that of the tides — an agency which, equally with 
the others, is traceable to unexpended astronomical motion. 
But making allowance for the changes which this works, we 
reach the conclusion that the slow wearing down of conti- 
nents and gradual filling up of seas, by rain, rivers, winds, 
waves, and ocean- streams, are the indirect effects of solar 
hent. 



1108 THE TRANSFORMATION AND EQUIVALENCE OP FORCES. 

Thus the inference forced on ns by the doctrine of trans- 
formation, that the forces which have moulded and re- 
moulded the Earth's crust must have pre-existed under some 
other shape, presents no difficulty if nebular genesis be 
granted ; since this pre-supposes certain forces that are both 
adequate to the results, and cannot be expended without pro- 
ducing the results. ~W"e see that while the geological changes 
classed as igneous, arise from the still-progressing motion of 
the Earth's substance to its centre of gravity; the antagonistic 
changes classed as aqueous, arise from the still-progressing 
motion of the Sun's substance towards its centre of gravity — 
a motion which, transformed into heat and radiated to us, is 
here re-transformed, directly into motions of the gaseous and 
liquid matters on the Earth's surface, and indirectly into 
motions of the solid matters. 

§ 70. That the forces exhibited in vital actions, vegetal 
and animal, are similarly derived, is so obvious a deduction 
from the facts of organic chemistry, that it will meet with 
ready acceptance from readers acquainted with these facts. 
Let us note first the physiological generalizations ; and then 
the generalizations which they necessitate. 

Plant-life is all directly or indirectly dependent on the 
heat and light of the sun — directly dependent in the im- 
mense majority of plants, and indirectly dependent iu plants 
which, as the fungi, flourish in the dark : since these, growing 
as they do at the expense of decaying organic matter, medi- 
ately draw their forces from the same original source. Each 
plant owes the carbon and hydrogen of which it mainly con- 
sists, to the carbonic acid and water contained in the surround- 
ing air and earth. The carbonic acid and water must, how- 
ever, be decomposed before their carbon and hydrogen can 
be assimilated. , To overcome the powerful affinities which 
nold their elements together, requires the expenditure of 
force ; and this force is supplied by the Sun. In what 
manner the decomposition is effected we do not know. But 



THE TRANSFORMATION AND EQUIVALENCE OF FORCES. 2QU 

*re know that when, under fit conditions, plants are exposed 
to the Sun's rays, they give off oxygen and accumulate carbon 
and hydrogen. In darkness this process ceases. It ceases 
too when the quantities of light and heat received are greatly 
reduced, as in winter. Conversely, it is active when the light 
and heat are great, as in summer. And the like relation is 
seen in the fact that while plant-life is luxuriant in the 
tropics, it diminishes in temperate regions, and disappears as 
we approach the poles. Thus the irresistible inference is, 
that the forces by which plants abstract the materials of their 
tissues from surrounding inorganic compounds — the forces by 
which they grow and carry on their functions, are forces that 
previously existed as solar radiations. 

That animal life is immediately or mediately dependent on 
vegetal life is a familiar truth ; and that, in the main, the 
processes of animal life are opposite to those of vegetal life is a 
truth long current among men of science. Chemically con- 
sidered, vegetal life is chiefly a process of de-oxidation, and 
animal life chiefly a process of oxidation : chiefly, we must 
say, because in so far as plants are expenders of force for the 
purposes of organization, they are oxidizers (as is shown by 
the exhalation of carbonic acid during the night) ; and ani- 
mals, in some of their minor processes, are probably de-oxi- 
dizers. But with this qualification, the general truth is 
that while the plant, decomposing carbonic acid and water 
and liberating oxygen, builds up the detained carbon and 
hydrogen (along with a little nitrogen and small quanti- - 
ties of other elements elsewhere obtained) into branches, 
leaves, and seeds ; the animal, consuming these branches, 
leaves, and seeds, and absorbing oxygen, recomposes car- 
bonic acid and water, together with certain nitrogenous 
compounds in minor amounts. And while the decom- 
position effected by the plant, is at the expense of cer : 
tain forces emanating from the sun, which are employed 
in overcoming the affinities of carbon and hydrogen for the 
oxygen united with them ; the re- composition effected by tho 



210 THE TRANSFORMATION AND EQUIVALENCE OP FORCES. 

animal, is at the profit of these forces, which are libera ted 
during the combination of suck elements. Thus the move- 
ments, internal and external, of the animal, are re-appear- 
ances in new forms of a power absorbed by the plant under 
the shape of light and heat. Just as, in the manner 
above explained, the solar forces expended in raising vapour 
from the sea's surface, are given out again in the fall of rain 
and rivers to the same level, and in the accompanying trans- 
fer of solid matters ; so, the solar forces that in the plant 
raised certain chemical elements to a condition of unstable 
equilibrium, are given out again in the actions of the animal 
during the fall of these elements to a condition of stable 
equilibrium. 

Besides thus tracing a qualitative correlation between these 
two great orders of organic activity, as well as between both 
of them and inorganic agencies, we may rudely trace a 
quantitative correlation. Where vegetal life is abundant, we 
usually find abundant animal life ; and as we advance from 
torrid to temperate and frigid climates, the two decrease to- 
gether. Speaking generally, the animals of each class reach 
a larger size in regions where vegetation is abundant, than 
in those where it is sparse. And further, there is a tolerably 
apparent connexion between the quantity of energy which 
each species of animal expends, and the quantity of force 
which the nutriment it absorbs gives out during oxidation. 

Certain phenomena of development in both plants and 
animals, illustrate still more directly the ultimate truth 
enunciated. Pursuing the suggestion made by Mr. Grove, 
in the first edition of his work on the " Correlation of the 
Thysical Forces," that a connexion probably exists between 
the forces classed as vital and those classed as physical, 
Dr. Carpenter has pointed out that such a connexion is 
clearly exhibited during incubation. The transformation of 
the unorganized contents of an egg into the organized chick, 
is altogether a question of heat : withhold heat and the process 
does not commence ; supply heat and it goes on while the 



THE TRANSFORMATION AND EQUIVALENCE OP FORCES. 211 

temperature is maintained, but ceases when the egg is allowed 
to cool. The developmental changes can be completed only 
Dy keeping the temperature with tolerable constancy at a 
definite height for a definite time ; that is — only by supply- 
ing a definite quantity of heat. In the metamorphoses of 
insects we may discern parallel facts. Experiments show 
not only that the hatching of their eggs is determined by 
temperature, but also that the evolution of the pupa into the 
imago is similarly determined ; and may be immensely ac- 
celerated or retarded according as heat is artificially supplied 
or withheld. It will suffice just to add that the germination of 
plants presents like relations of cause and effect — relations so 
similar that detail is superfluous. 

Thus then the various changes exhibited to us by tho 
organic creation, whether considered as a whole, or in its two 
great divisions, or in its individual members, conform, so far 
as we can ascertain, to the general principle. Where, as in 
the transformation of an egg into a chick, we can investigate 
the phenomena apart from all complications, we find that the 
force manifested in the process of organisation, involves 
expenditure of a pre-existing force. Where it is not, as 
in the egg or the chrysalis, merely the change of a fixed 
quantity of matter into a new shape, but where, as in the 
growing plant or animal, we have an incorporation of matter 
existing outside, there is still a pre-existing external force 
at the cost of which this incorporation is effected. And 
where, as in the higher division of organisms, there re- 
main over and above the forces expended in organization, 
certain surplus forces expended in movement, these too are 
indirectly derived from this same pre-existing external force. 



§ 71. Even after all that has been said in the foregoing 
part of this work, many will be alarmed by the assertion, 
that the forces which we distinguish as mental, come within 
the same generalization. Yet there is no alternative but to 
make tins assertion : the facts which justify, or rather which 



212 THE TRANSFORMATION AND EQUIVALENCE OF FORCES. 

necessitate it, being abundant and conspicuous. They fall 
into the following groups. 

All impressions from moment to moment made on our 
organs of sense, stand in direct correlation with physical 
forces existing externally. The modes of consciousness called 
pressure, motion, sound, light, heat, are effects produced in 
us by agencies which, as otherwise expended, crush or fracture 
pieces of matter, generate vibrations in surrounding objects, 
cause chemical combinations, and reduce substances from a 
solid to a liquid form. Hence if we regard the changes of 
relative position, of aggregation, or of chemical state, thus 
arising, as being transformed manifestations of the agencies 
from which they arise ; so must we regard the sensations 
which such agencies produce in us, as new forms of the forces 
producing them. Any hesitation to admit that, be- 

tween the physical forces and the sensations there exists a 
correlation like that between the physical forces themselves, 
must disappear on remembering how the one correlation, like 
the other, is not qualitative only but quantitative. Masses 
of matter which, by scales or dynamometer, are shown to 
differ greatly in weight, differ as greatly in the feelings of 
pressure they produce on our bodies. In arresting moving 
objects, the strains we are conscious of are proportionate to 
the momenta of such objects as otherwise measured. Under 
like conditions the impressions of sounds given to us by 
vibrating strings, bells, or columns of air, are found to vary 
in strength with the amount of force applied. Fluids or 
eolids proved to be markedly contrasted in temperature by 
the different degrees of expansion they produce in the 
mercurial column, produce in us correspondingly different 
degrees of the sensation of heat. And similarly unlike in- 
tensities in our impressions of light, answer to unlike effects 
as measured by photometers. 

Besides the correlation and equivalence between external 
physical forces, and the mental forces generated by them in 
us under the form of sensations, there is a correlation and 



THE TRANSFORMATION AND EQUIVALENCE OP FORCES. 2 1 '3 

equivalence between sensations and those physical forces 
which, in the shape of bodily actions, result from them. The 
feelings we distinguish as light, heat, sound, odour, taste, 
pressure, &c, do not die away without immediate results ; 
but are invariably followed by other manifestations of force. 
In addition to the excitements of secreting organs, that are 
:n some cases traceable, there arises a contraction of the in- 
voluntary muscles, or of the voluntary muscles, or of both. 
Sensations increase the action of the heart — slightly when 
they are slight ; markedly when they are marked ; and recent 
physiological inquiries imply not only that contraction of the 
heart is excited by every sensation, but also that the muscular 
fibres throughout the whole vascular system, are at the same 
time more or less contracted. The respiratory muscles, too, 
are stimulated into greater activity by sensations. The rate 
of breathing is visibly and audibly augmented both by plea- 
surable and painful impressions on the nerves, when these 
reach any intensity. It has even of late been shown that \ 
inspiration becomes more frequent on transition from dark- 
ness into sunshine, — a result probably due to the increased 
amount of direct and indirect nervous stimulation involved. 
"When the quantity of sensation is great, it generates con- 
tractions of the voluntary muscles, as well as of the involun- 
tary ones. Unusual excitement of the nerves of touch, as by 
tickling, is followed by almost incontrollable movements of 
the limbs. Violent pains cause violent struggles. The 
start that succeeds a loud sound, the wry face produced by 
the taste of anything extremely disagreeable, the jerk with 
which the hand or foot is snatched out of water that is very 
hot, are instances of the transformation of feeling into 
motion ; and in these cases, as in all others, it is manifest 
that the quantity of bodily action is proportionate to the 
quantity of sensation. Even where from pride there is a 
suppression of the screams and groans expressive of great 
pain (also indirect results of muscular contraction), we may 
still see in the clenching of the hands, the knitting of the 



214 THE TRANSFORMATION AND EQUIVALENCE OP FORCES. 

brows, and the setting of the teeth, that the bodily actions 
developed arc as great, though less obtrusive in their re- 
sults. If we take emotions instead of sensations, we 
find the correlation and equivalence equally manifest. Not 
only are the modes of consciousness directly produced in us 
by physical forces, re-transform able into physical forces under 
the form of muscular motions and the changes they initiate ; 
but the like is true of those modes of consciousness which are 
not directly produced in us by the physical forces. Emotions 
of moderate intensity, like sensations of moderate intensity, 
generate little beyond excitement of the heart and vascular 
system, joined sometimes with increased action of glandular 
organs. But as the emotions rise in strength, the muscles of 
the face, body, and limbs, begin to move. Of examples may 
be mentioned the frowns, dilated nostrils, and stampings of 
anger ; the contracted brows, and wrung hands, of grief ; the 
smiles and leaps of joy ; and the frantic struggle.3 of terror or 
despair. Passing over certain apparent, but only apparent, 
exceptions, we see that whatever be the kind of emotion, 
there is a manifest .relation between its amount, and the 
amount of muscular action induced : alike from the erect 
carriage and elastic step of exhilaration, up to the dancings 
of immense delight, and from the fidgettiness of impatience 
up to the almost convulsive movements accompanying great 
mental agony. To these several orders of evidence 
must be joined the further one, that between our feelings and 
those voluntary motions into which they are transformed, 
there comes the sensation of muscular tension, standing in 
manifest correlation with both — a correlation that is dis- 
tinctly quantitative : the sense of strain varying, other 
things equal, directly as the quantity of momentum 
generated. 

"But how," it may be askei, "can we interpret by the 
law of correlation the genesis of those thoughts and feelings 
which, instead of following external ctimuli, arise spontaneous- 
ly ? Between the indignation caused by an insult, and the 



THE TRANSFORMATION AND EQUIVALENCE OF FORCES. 215 

loud sounds or violent acts that follow, the alleged connexion 
may hold ; but whence come the crowd of ideas and the mass 
of feelings that expend themselves in these demonstrations ? 
They are clearly not equivalents of the sensations produced 
b}- the words on the ears ; for the same words otherwise 
arranged, would not have caused them. The thing said 
bears to the mental action it excites, much the same relation 
that the pulling of a trigger bears to the subsequent explo- 
sion — does not produce the power, but merely liberates it. 
Whence then arises this immense amount of nervous energy 
which a whisper or a glance may call forth ?" The 

reply is, that the immediate correlates of these and other such 
modes of consciousness, are not to be found in the agencies 
acting on us externally, but in certain internal agencies. 
The forces called vital, w^hich we have seen to be correlates \ 
of the forces called physical, are the immediate sources of "\ 
these thoughts and feelings ; and are expended in producing 
them. The proofs of this are various. Here are some of 
them. It is a conspicuous fact that mental action is 

contingent on the presence of a certain nervous apparatus ; 
and that, greatly obscured as it is by numerous and involved 
conditions, a general relation may be traced between the size 
of this apparatus and the quantity of mental action as measur- 
ed by its results. Further, this apparatus has a particular 
chemical constitution on which its activity depends ; and 
there is one element in it between the amount of which and 
the amount of function performed, there is an ascertained 
connexion : the proportion of phosphorus present in the brain 
being the smallest in infancy, old age and idiot cy, and the 
greatest during the prime of life. JN"ote next, that 

the evolution of thought and emotion varies, other things 
equal, with the supply of blood to the brain. On the one 
hand, a cessation of the cerebral circulation, from arrest of 
the heart's action, immediately entails unconsciousness. On 
the other hand, excess of cerebral circulation (unless it is 
such as to cause undue pressure) results in an excitement 



216 THE TRANSFORMATION AND EQUIVALENCE OP FORCES. 

rising finally to delirium. Not the quantity only, 

but also the condition of the blood passing through the 
nervous system, influences the mental manifestations. - The 
arterial currents must be duly aerated, to produce the normal 
amount of cerebration. At the one extreme, we find that if 
the blood is not allowed to exchange its carbonic acid for 
oxygen, there results asphyxia, with its accompanying stop- 
page of ideas and feelings. "While at the other extreme, we 
find that by the inspiration of nitrous oxide, there is pro- 
duced an excessive, and indeed irrepressible, nervous ac- 
tivity. Besides the connexion between the develop- 
ment of the mental forces and the presence of sufficient 
oxygen in the cerebral arteries, there is a kindred connexion 
between the development of the mental forces and the pre- 
sence in the cerebral arteries of certain other elements. 
There must be suppited special materials for the nutrition of 
the nervous centres, as well as for their oxidation. And how 
what we may call the quantity of consciousness, is, other things 
equal, determined by the constituents of the blood, is unmis- 
takeably seen in the exaltation that follows when certain 
chemical compounds, as alcohol and the vegeto- alkalies, are 
added to it. The gentle exhilaration which tea and coffee 
create, is familiar to all ; and though the gorgeous imagina- 
tions and intense feelings of happiness produced by opium 
and hashish, have been experienced by few, (in this country 
at least,) the testimony of those who have experienced them 
is sufficiently conclusive. Yet another proof that the 
genesis of the mental energies is immediately dependent on 
chemical change, is afforded by the fact, that the effete pro- 
ducts separated from the blood by the kidneys, vary in cha- 
racter with the amount of cerebral action. Excessive activity 
of mind is habitually accompanied by the excretion of an un- 
usual quantity of the alkaline phosphates. Conditions of 
abnormal nervous excitement bring on analogous effects. 
And the " peculiar odour of the insane," implying as it does 
morbid products in the perspiration, shows a connexion be- 



THE TRANSFORMATION AND EQUIVALENCE OP FORCES. 217 

tween insanity and a special composition of the circulating 
fluids — a composition which, whether regarded as cause or 
consequence, equally implies correlation of the mental and 
the physical forces. Lastly we have to note that this 

correlation too, is, so far as we can trace it, quantitative. 
Provided the conditions to nervous action are not infringed 
on, and the concomitants are the same, there is a tolerably 
constant ratio between the amounts of the antecedents and 
consequents. Within the implied limits, nervous stimulants 
and anaesthetics produce effects on the thoughts and feel- 
ings, proportionate to the quantities administered. And 
conversely, where the thoughts and feelings form the initial 
term of the relation, the degree-i^^iction oWihe bodily 
energies is great, in proporti^f^^ftly are gre^|\eaching 
in extreme cases a total prosCrC^on of ph} T sique^ 

Various classes of facts tlms^^^ tJftrove 'tliM; the law of 
metamorphosis, which holcr^ajftono: the physical} forces, 
holds equally between thern^^m^^^^j^stf^X forces. 
Those modes of the Unknowable wnicn we call mo- 
tion, heat, light, chemical affinity, &c, are alike trans- 
formable into each other, and into those modes of the 
Unknowable which we distinguish as sensation, emotion, 
thought : these, in their turns, being directly or indirectly 
re-transformable into the original shapes. That no idea or 
feeling arises, save as a result of some physical force expended 
in producing it, is fast becoming a common place of science ; 
and whoever duly weighs the evidence will see, that nothing 
but an overwhelming bias in favour of a pre-conceived 
theory, can explain its non-acceptance. How this 

metamorphosis takes place — how a force existing as motion, 
heat, or light, can become a mode of consciousness — how it is 
possible for aerial vibrations to generate the sensation we call 
sound, or for the forces liberated by chemical changes in the 
brain to give rise to emotion — these are mysteries which it is 
impossible to fathom. But they are not profounder mysteries 
than the transformations of the physical forces into each other. 

11 



218 THE TRANSFORMATION AND EQUIVALENCE OP FORCES. 

They are not more completely beyond our comprehension 
than the natures of Mind and Matter. They haye simply the 
same insolubility as all other ultimate questions. We can 
learn nothing more than that here is one of the uniformities 
in the order of phenomena. 

§ 72. If the general law of transformation and equivalence 
holds of the forces we class as vital and mental, it must hold 
also of those which we class as social. Whatever takes place 
in a society is due to organic or inorganic agencies, or to 
a combination of the two — results either from the undirected 
physical forces around, from these physical forces as directed 
by men, or from the forces of the men themselves. No 
change can occur in its organization, its modes of activity, or 
the effects it produces on the face of the Earth, but what 
proceeds, mediately or immediately, from these. Let us con- 
sider first the correlation between, the phenomena which 
societies display, and the vital phenomena. 

Social power and life varies, other things equal, with the 
population. Though different races, differing widely in their 
fitness for combination, show us that the forces manifested in 
a society are not necessarily proportionate to the number of 
people ; yet we see that under given conditions, the forces 
manifested are confined within the limits which the number 
of people imposes. A small society, no matter how superior 
the character of its members, cannot exhibit the same 
quantity of social action as a large one. The production and 
distribution of commodities must be on a comparatively small 
scale. A multitudinous press, a prolific literature, or a 
massive political agitation, is not possible. And there can 
be but a small total of results in the shape of art-products 
and scientific discoveries. The correlation of the 

social with the physical forces through the intermediation of 
the vital ones, is, however, most clearly shown in the different 
amounts of activity displayed by the same society according 
as its members are supplied with different amounts of force 



THE TRANSFORMATION AND EQUIVALENCE OF FORCES. 219 

from the external world. In the effects of good and bad 
harvests, we yearly see this relation illustrated. A greatly 
deficient yield of wheat is soon followed by a diminution of 
business. Factories are worked half-time, or close entirely ; 
railway traffic falls ; retailers find their sales much lessened ; 
houso-building is almost suspended ; and if the scarcity 
rises to famine, a thinning of the population still more 
diminishes the industrial vivacity. Conversely, an unusually 
abundant harvest, occurring under conditions not otherwise 
unfavourable, both excites the old producing and distributing 
agencies and sets up new ones. The surplus social energy 
finds vent in speculative enterprises. Capital seeking in- 
vestment carries out inventions that have been lying unutil- 
ized. Labour is expended in opening new channels of com- 
munication. There is increased encouragement to those who 
furnish the luxuries of life and minister to the aesthetic 
faculties. There are more marriages, and a greater rate of 
increase in population. Thus the social organism grows 
larger, more complex, and more active. "When, as 

happens with most civilized nations, the whole of the ma- 
terials for subsistence are not drawn from the area inhabited, 
but are partly imported, the people are still supported by 
certain harvests elsewhere grown at the expense of certain 
physical forces. Our own cotton-spinners and weavers supply 
the most conspicuous instance of a section in one nation liv- 
ing, in great part, on imported commodities, purchased by the 
labour they expend on other imported commodities. But 
though the social activities of Lancashire are due chiefly to 
materials not drawn from our own soil, they are none the less 
evolved from physical forces elsewhere stored up in fit forms 
and then brought here. 

If we ask whence come these physical forces from which, 
through the intermediation of the vital forces, the social 
forces arise, the reply is of course as heretofore — the solar 
radiations. Based as the life of a society is on animal and 
vegetal products ; and dependent as these animal and vegetal 



220 THE TRANSFORMATION AND EQUIVALENCE OP FORCES. 

products are on the light and heat of the sun ; it follows that 
the changes going on in societies are effects of forces haying 
a common origin with those which produce all the other 
orders of changes that have been analyzed. Not only is the 
force expended by the horse harnessed to the plough, and by 
the labourer guiding it, derived from the same reservoir 
as is the force of the falling cataract and the roaring hurri- 
cane ; but to this same reservoir are eventually traceable those 
subtler and more complex manifestations of force which 
humanity, as socially embodied, evolves. The assertion is a 
startling one, and by many will be thought ludicrous ; but it 
is an unavoidable deduction which cannot here be passed over. 
Of the physical forces that are directly transformed into 
social ones, the like is to be said. Currents of air and water, 
which before the use of steam were the only agencies brought 
in aid of muscular effort for the performance of industrial 
processes, are, as we have seen, generated by the heat of the 
sun. And the inanimate power that now, to so vast an 
extent, supplements human labour, is similarly derived. The 
late George Stephenson was one of the first to recognize the 
fact that the force impelling his locomotive, originally eman- 
ated from the sun. Step by step we go back — from the mo- 
tion of the piston to the evaporation of the water ; thence to 
the heat evolved during the oxidation of coal ; thence to the 
assimilation of carbon by the plants of whose imbedded re- 
mains coal consists ; thence to the carbonic acid from which 
their carbon was obtained ; and thence to the rays of light 
that de- oxidized this carbonic acid. Solar forces millions of 
vears ago expended on the Earth's vegetation, and since 
locked up beneath its surface, now smelt the metals required 
/or our machines, turn the lathes by which the machines are 
shaped, work them when put together, and distribute the 
fabrics they produce. And in so far as economy of labour 
makes possible the support of a larger population ; gives a 
surplus of human power that would else be absorbed in 
manual occupations ; and it facilitates the development of 



THE TRANSFORMATION AND EQUIVALENCE OF FORCES. 221 

higher kinds of activity ; it is clear that these social forces 
which are directly correlated with physical forces anciently 
derived from the sun, are only less important than those 
whose correlates are the vital forces recently derived from it. 

§ 73. Regarded as an induction, the doctrine set forth in 
this chapter will most likely be met by a demurrer. Many 
who admit that among physical phenomena at least; trans- 
formation of forces is now established, will probably say that 
inquiry has not yet gone far enough to enable us to predicate 
equivalence. And in respect of the forces classed as vital, 
mental, and social, the evidence assigned, however little to be 
explained away, they will consider by no means conclusive 
even of transformation, much less of equivalence. 

To those who think thus, it must now however be pointed 
out, that the universal truth above illustrated under its various 
aspects, is a necessary corollary from the persistence of force. 
Setting out with the proposition that force can neither come 
into existence, nor cease to exist, the several foregoing 
general conclusions inevitably follow. Each manifestation of 
force can be interpreted only as the effect of some antecedent 
force : no matter w r hether it be an inorganic action, an 
animal movement, a thought, or a feeling. Either this must 
be conceded, or else it must be asserted that our successive 
states of consciousness are self- created. Either mental 
energies, as well as bodily ones, are quantitatively correlated 
to certain energies expended in their production, and to 
certain other energies which they initiate ; or else nothing 
must become something and something must become nothing 
The alternatives are, to deny the persistence of force, or to 
admit that every physical and psychial change is generated 
by certain antecedent forces, and that from given amounts of 
such forces neither more nor less of such physical and psychial 
changes can result. And since the persistence of force, being a 
datum of consciousness, cannot be denied, its unavoidable Corol- 
lary must be accepted. This corollary cannot indeed be 



222 THE TRANSFORMATION AND EQUIVALENCE OE EORCER. 

made more certain by accumulating illustrations. The truth as 
arrived at deductively, cannot be inductively confirmed. For 
every one of such facts as those above detailed, is established 
only through the indirect assumption of that persistence of 
force, from which it really follows as a direct consequence. 
The most exact proof of correlation and equivalence which it 
is possible to reach by experimental inquiry, is that based on 
measurement of the forces expended and the forces produced. 
But, as was shown in the last chapter, any such process of 
measurement implies the use of some unit of force which is 
assumed to remain constant ; and for this assumption there 
can be no warrant but that it is a corollary from the persist- 
ence of force. How then can any reasoning based on this 
corollary, prove the equally direct corollary that when a given 
quantity of force ceases to exist under one form, an equal 
quantity must come into existence under some other form or 
forms ? Clearly the a priori truth expressed in this last 
corollar}^ cannot be more firmly established by any a pos- 
teriori proofs which the first corollary helps us to. 

" What then," it may be asked, " is the use of these investi- 
gations by which transformation and equivalence of forces is 
sought to be established as an inductive truth? Surely it 
will not be alleged that they are useless. Yet if the corre- 
lation cannot be made more certain by them than it is already, 
does not their uselessness necessarily follow ? " No. They are 
of value as disclosing the many particular implications which 
the general truth does not specifj^. They are of value as 
teaching us how much of one mode of force is the equivalent 
of so much of another mode. They are of value as determin- 
ing under what conditions each metamorphosis occurs. And 
they are of value as leading us to inquire in what shape 
the remnant of force has escaped, when the apparent results 
are not equivalent to the cause. 



CHAPTER IX. 

TTIE DIRECTION OF MOTION. 

§ 74. The Absolute Cause of changes, no matter what may 
be their special natures, is not less incomprehensible in respect 
of the unity or duality of its action, than in all other respects. 
"We cannot decide between the alternative suppositions, that 
phenomena are due to the variously- conditioned workings of a 
single force, and that they are due to the conflict of two forces. 
Whether, as some contend, everything is explicable on the 
hypothesis of universal pressure, whence what we call tension 
results differentially from inequalities of pressure in opposite 
directions ; or whether, as might be with equal propriety con- 
tended, things are to be explained on the hypothesis of uni- 
versal tension, from which pressure is a differential result ; or 
whether, as most physicists hold, pressure and tension every- 
where co-exist ; are questions which it is impossible to settle. 
Each of these three suppositions makes the facts comprehen- 
sible, only by postulating an inconceivability. To assume a 
universal pressure, confessedly requires us to assume an 
infinite plenum — an unlimited space full of something which 
is everywhere pressed by something beyond ; and this 
assumption cannot be mentally realized. That universal 
tension is the immediate agency to which phenomena are 
due, is an idea open to a parallel and equally fatal objection. 
And however verbally intelligible may be the proposition that 
pressure and tension everywhere co- exist, yet we cannot truly 



224 THE DIRECTION OF MOTION. 

represent to ourselves one ultimate unit of matter as drawing 
another while resisting it. 

Nevertheless, this last belief is one which we are compelled 
to entertain. Matter cannot be conceived except as mani- 
festing forces of attraction and repulsion. Body is dis- 
tinguished in our consciousness from Space, by its opposition 
to our muscular energies ; and this opposition we feel under 
the twofold form of a cohesion that hinders our efforts to 
rend, and a resistance that hinders our efforts to compress. 
"Without resistance there can be merely empty extension. 
Without cohesion there can be no resistance. Probably this 
conception of antagonistic forces, is originally derived from 
the antagonism of our flexor and extensor muscles. But be 
this as it may, we are obliged to think of all objects as made 
up of parts that attract and repel each other ; since this is the 
form of our experience of all objects. 

By a higher abstraction results the conception of attractive 
and repulsive forces pervading space. We cannot dissociate 
force from occupied extension, or occupied extension from 
force ; because we have never an immediate consciousness of 
either in the absence of the other. Nevertheless, we have 
abundant proof that force is exercised through what ap- 
pears to our senses a vacuity. Mentally to represent this 
exercise, we are hence obliged to fill the apparent vacuity 
with a species of matter — an etherial medium. The consti- 
tution we assign to this etherial medium, however, like the 
constitution we assign to solid substance, is necessarily an 
abstract of the impressions received from tangible bodies. 
The opposition to pressure which a tangible body offers to us, 
is not shown in one direction only, but in all directions ; and 
so likewise is its tenacity. Suppose countless lines radiating 
from its centre on every side, and it resists along each of these 
lines and coheres along each of these lines. Hence the 
constitution of those ultimate units through the instrumen- 
tality of which phenomena are interpreted. Be they atoms 
of ponderable matter or molecules of ether, the properties wo 



THE DIP.ECTION OF MOTION. 225 

conceive them to possess are nothing else than these per- 
ceptible properties idealized. Centres of force attracting and 
repelling each other in all directions, are simply insensible 
portions of matter having the endowments common to sensi- 
ble portions of matter — endowments of which we cannot by 
any mental effort divest them. In brief, they are the in- 
variable elements of the conception of matter, abstracted from 
its variable elements — size, form, quality, &c. And so to 
interpret manifestations of force which cannot be tactually 
experienced, we use the terms of thought supplied by our 
tactual experiences ; and this for the sufficient reason that we 
must use these or none. 

After all that has been before shown, and after the hint 
given above, it needs scarcely be said that these universally 
co-existent forces of attraction and repulsion, must not be 
taken as realities, but as our symbols of the reality. They 
are the forms under which the workings of the Unknowable 
are cognizable by us — modes of the Unconditioned as pre- 
sented under the conditions of our consciousness. But while 
knowing that the ideas thus generated in us are not absolutely 
true, we may unreservedly surrender ourselves to them as re- 
latively true ; and may proceed to evolve a series of deduc- 
tions having a like relative truth. 

§ 75. From universally co- existent forces of attraction and 
repulsion, there result certain laws of direction of all move- 
ment. Where attractive forces alone are concerned, or 
rather are alone appreciable, movement takes place in the di- 
rection of their resultant ; which may, in a sense, be called the 
line of greatest traction. TThere repulsive forces alone are 
concerned, or rather are alone appreciable, movement takes 
place along their resultant ; which is usually known as the line 
of least resistance. And where both attractive and repulsive 
forces are concerned, or are appreciable, movement takes 
place along the resultant of all the tractions and resistances. 
Strictly speaking, this last is the sole law ; since, by the 



226 THE DIRECTION OF MOTION 

hypothesis, both forces are everywhere in action. But 
very frequently the one kind of force is so immensely in 
excess that the effect of the other kind may be left out of 
consideration. Practically we may say that a body falling 
to the Earth, follows the line of greatest traction ; since, 
though the resistance of the air must, if the body be irregular, 
cause some divergence from this line, (quite perceptible with 
feathers and leaves,) yet ordinarily the divergence is so slight 
that we may omit it. In the same manner, though the course 
taken by the steam from an exploding boiler, differs somewhat 
from that which it would take were gravitation out of the ques- 
tion ; yet, as gravitation affects its course infinitesimally, we are 
justified in asserting that the escaping steam follows the line of 
least resistance. Motion then, we may say, always follows the 
line of greatest traction, or the line of least resistance, or the 
resultant of the two : bearing in mind that though the last is 
alone strictly true, the others are in many cases sufficiently 
near the truth for practical purposes. 

Movement set up in any direction is itself a cause of further 
movement in that direction, since it is the embodiment of a 
surplus force in that direction. This holds equally with the 
transit of matter through space, the transit of matter through 
matter, and the transit through matter of any kind of vibra- 
tion. In the case of matter moving through space, this prin- 
ciple is expressed in the law of inertia — a law on which the 
calculations of physical astronomy are wholly based. In the 
case of matter moving through matter, we trace the same 
truth under the familiar experience that any breach made by 
one solid through another, or any channel formed by a fluid 
through a solid, becomes a route along which, other things 
equal, subsequent movements of like nature take place. And 
in the case of motion passing through matter under the form 
of an impulse communicated from part to part, the facts of 
magnetization go to show that the establishment of undula- 
tions along certain lines, determines their continuance along 
those lines. 



THE DUIECTION OF MOTION. 227 

It further follows from tlie conditions, that the direction of 
movement can rarely if ever be perfectly straight. For 
matter in motion to pursue continuously the exact line in 
which it sets out, the forces of attraction and repulsion 
must be symmetrically disposed around its path ; and the 
chances against this are infinitely great. The impossibility 
of making an absolutely true edge to a bar of metal — the 
fact that all which can be done by the best mechanical ap- 
pliances, 'is to reduce the irregularities of such an edge to 
amounts that cannot be perceived without magnifiers — suffi- 
ciently exemplifies how, in consequence of the unsymmetrical 
distribution of forces around the line of movement, the move- 
ment is rendered more or less indirect. It may be 
well to add that in proportion as the forces at work are 
numerous and varied, the curve a moving body describes is 
necessarily complex : witness the contrast between the flight 
of an arrow and the gyrations of a stick tossed about by 
breakers. 

As a step towards unification of knowledge we have now 
to trace these general laws throughout the various orders of 
changes which the Cosmos exhibits. Wehavetonote how every 
motion takes place along the line of greatest traction, of least 
resistance, or of their resultant ; how the setting up of motion 
along a certain line, becomes a cause of its continuance along 
that line ; how, nevertheless, change of relations to external 
forces, always renders this line indirect ; and how the degree 
of its indirectness increases with every addition to the number 
of influences at work. 

§ 76. If we assume the first stage in nebular condensation 
to be the precipitation into flocculi of denser matter previously 
diffused through a rarer medium, (a supposition both physi- 
cally justified, and in harmony with certain astronomical ob- 
servations,) we shall find that nebular motion is interpretable 
in pursuance of the above general laws. Each portion of such 
vapour-like matter must begin to move towards the common 



228 THE DIRECTION OF MOTION. 

centre of gravity. The tractive forces which would of them- 
selves carry it in a straight- line to the centre of gravity, are 
opposed by the resistant forces of the medium through 
which it is drawn. The direction of movement must be the 
resultant of these — a resultant which, in consequence of the 
unsjmimetrical form of the flocculus, must be a curve directed, 
not to the centre of gravity, but towards one side of it. And 
it may be readily shown that in an aggregation of such floc- 
culi, severally thus moving, there must, by composition of 
forces, eventually result a rotation of the whole nebula in one 
direction. 

Merely noting this hypothetical illustration for the purpose 
of showing how the law applies to the case of nebular evolu- 
tion, supposing it to have taken place, let us pass to the phe- 
nomena of the Solar System as now exhibited. Here the 
general principles above set forth are every instant exempli- 
fied. Each planet and satellite has a momentum which 
would, if acting alone, carry it forward in the direction it is 
at any instant pursuing. This momentum hence acts as a 
resistance to motion in any other direction. Each planet and 
satellite, however, is drawn by a force which, if unopposed, 
would take it in a straight line towards its primary. And the 
resultant of these two forces is that curve which it describes — 
a curve manifestly consequent on the unsymmetrical distribu- 
tion of the forces around its path. This path, when more 
closely examined, supplies us with further illustrations. For 
it is not an exact circle or ellipse ; which it would be were the 
tangential and centripetal forces the only ones concerned. 
Adjacent members of the Solar System, ever varying in their 
relative positions, cause what we call perturbations ; that is, 
slight divergences in various directions from that circle or 
ellipse which the two chief forces would produce. These per- 
turbations severally show us in minor degrees, how the line of 
movement is the resultant of all the forces engaged ; and how 
this line becomes more complicated in proportion as the 
forces are multiplied. If instead of the motions of the 



THE DIRECTION OF MOTION. 22d 

planets and satellites as wholes, we consider the motions of 
their parts, we meet with comparatively complex illustrations. 
Every portion of the Earth's substance in its daily rotation, 
describes a curve which is in the main a resultant of that 
resistance which checks its nearer approach to the centre of 
gravity, that momentum which would carry it off at a tangent, 
and those forces of gravitation and cohesion which keep it 
from being so carried off. If this axial motion be compounded 
with the orbital motion, the course of each part is seen to be 
a much more involved one. And we find it to have a still 
greater complication on taking into account that lunar attrac- 
tion which mainly produces the tides and the precession of 
the equinoxes. 

§ 77. TVe come next to terrestrial changes : present ones 
as observed, and past ones as inferred by geologists. Let us 
set out with the hourly-occurring alterations in the Earth's 
atmosphere ; descend to the slower alterations in progress on 
its surface ; and then to the still slower ones going on beneath. 

Masses of air, absorbing heat from surfaces warmed by the 
sun, expand, and so lessen the weight of the atmospheric 
columns of which they are parts. Hence they offer to adjacent 
atmospheric columns, diminished lateral resistance ; and these, 
moving in the directions of the diminished resistance, displace 
the expanded air ; while this, pursuing an upward course, dis- 
plays a motion along that line in which there is least pressure. 
TThen again, by the ascent of such heated masses from ex- 
tended areas like the torrid zone, there is produced at the 
upper surface of the atmosphere, a protuberance beyond the 
limits of equilibrium — when the air forming this protuber- 
ance begins to overflow laterally towards the poles ; it does 
so because, while the tractive force of the Earth is nearly the 
same, the lateral resistance is greatly diminished. And 
throughout the course of each current thus generated, as well 
as throughout the course of each counter-current flowing in- 
to the vacuum that is left, the direction is always the resultant 



230 TILE DIRECTION OP MOTION. 

of the Earth's tractive force and the resistance offered by tho 
surrounding masses of air : modified only by conflict with 
other currents similarly determined, and by collision with 
prominences on the Earth's crust. The movements 

of water, in both its gaseous and liquid states, furnish further 
examples. In conformity with the mechanical theory of heat, 
it may be shown that evaporation is the escape of particles of 
water in the direction of least resistance ; and that as the re- 
sistance (which is due to the pressure of the water diffused in 
a gaseous state) diminishes, the evaporation increases. Con- 
versely, that rushing together of particles called condensation, 
which takes place when any portion of atmospheric vapour 
has its temperature much lowered, may be interpreted as a 
diminution of the mutual pressure among the condensing 
particles, while the pressure of surrounding particles remains 
the same ; and so is a motion taking place in the direction of 
lessened resistance. In the course followed by the resulting 
rain-drops, we have one of the simplest instances of the joint 
effect of the two antagonist forces. The Earth's attraction, 
and the resistance of atmospheric currents ever varying in 
direction and intensity, give as their resultants, lines which 
incline to the horizon in countless different degrees and under- 
go perpetual variations. More clearly still is the law exem- 
plified by these same rain-drops when they reach the ground. 
In the course they take while trickling over its surface, in 
every rill, in every larger stream, and in every river, we see 
them descending as straight as the antagonism of surround- 
ing objects permits. From moment to moment, the motion 
of water towards the Earth's centre is opposed by the solid 
matter around and under it ; and from moment to moment 
its route is the resultant of the lines of greatest traction and 
least resistance. So far from a cascade furnishing, as it seems 
to do, an exception, it furnishes but another illustration. For 
though all solid obstacles to a vertical fall of the water are 
removed, yet the water's horizontal momentum is an obstacle ; 
and the parabola in which the stream leaps from the pro- 



THE DIRECTION OF MOTION. . 231 

j'ecting ledge, is generated by the combined gravitation and 
momentum. It may be well just to draw attention 

to the degree of complexity here produced in the line of 
movement by the variety of forces at work. In atmospheric 
currents, and still more clearly in water-courses (to which 
might be added ocean-streams), the route followed is too com- 
plex to be defined, save as a curve of three dimensions with 
an ever varying equation. 

The Earth's solid crust undergoes changes that supply an- 
other group of illustrations. The denudation of lands and 
the depositing of the removed sediment in new strata at the 
bottoms of seas and lakes, is a process throughout which mo- 
tion is obviously determined in the same way as is that of the 
water effecting the transport. Again, though we have no 
direct inductive proof that the forces classed as igneous, ex- 
pend themselves along lines of least resistance ; yet what little 
we know of them is in harmony with the belief that they do 
so. Earthquakes continually revisit the same localities, and 
special tracts undergo for long periods together successive 
elevations or subsidences, — facts which imply that already- 
fractured portions of the Earth's crust are those most prone 
to yield under the pressure caused by further contractions. 
The distribution of volcanoes along certain lines, as well as 
the frequent recurrence of eruptions from the same vents, 
are facts of like meaning. 

§ 78. That organic growth takes place in the direction of 
least resistance, is a proposition that has been set forth and 
illustrated by Mr. James Hint on, in the Medico- Chirurgical 
Review for October, 1858. After detailing a few of the early 
observations which le^l him to this generalization, he for- 
mulates it thus : — 

" Organic form is the result of motion." 
" Motion takes the direction of least resistance." 
" Therefore organic form is the result of motion in the 
direction of least resistance." 



232 THE DIRECTION OF MOTION. 

After an elucidation and defence of this position, Mr. 
Hinton proceeds to interpret, in conformity with, it, sun- 
dry phenomena of development. Speaking of plants he 
says : — 

" The formation of the root furnishes a beautiful illustra- 
tion of the law of least resistance, for it grows by insinuating 
itself, cell by cell, through the interstices of the soil ; it is by 
such minute additions that it increases, winding and twisting 
whithersoever the obstacles it meets in its path determine, and 
growing there most, where the nutritive materials are added 
to it most abundantly. As we look on the roots of a mighty 
tree, it appears to us as if they had forced themselves with 
giant violence into the solid earth. But it is not so ; they 
were led on gently, cell added to cell, softly as the dews de- 
scended, and the loosened earth made way. Once formed, in- 
deed, they expand with an enormous power, but the spongy 
condition of the growing radicles utterly forbids the supposi- 
tion that they are forced into the earth. Is it not probable, 
indeed, that the enlargement of the roots already formed may 
crack the surrounding soil, and help to make the interstices 
into which the new rootlets grow ?" * * * 

" Throughout almost the whole of organic nature the spiral 
form is more or less distinctly marked. Now, motion under 
resistance takes a spiral direction, as may be seen by the mo- 
tion of a body rising or falling through water. A bubble 
rising rapidly in water describes a spiral closely resembling 
a corkscrew, and a body of moderate specific gravity dropped 
into water may be seen to fall in a curved direction, the 
spiral tendency of which may be distinctly observed 
* * In this prevailing spiral form of organic 
bodies, therefore, it appears to me, that there is presented a 
strong prima facie case for the view I have maintained. 
* * The spiral form of the branches of many 

trees is very apparent, and the universally spiral arrangement 
of the leaves around the stem of plants needs only to be referred 
to. * * * The heart commences as a spiral turn, 



THE DIRECTION OF MOTION. 2Ctf 

and iii its perfect form a manifest spiral may be traced through 
the left ventricle, right ventricle, right auricle, left auricle 
and appendix. And what is the spiral turn in which the 
heart commences but a necessary result of the lengthening, 
under a limit, of the cellular mass of which it then con- 
sists?" * * * 

"Every one must have noticed the peculiar curling up of 
the young leaves of the common fern. The appearance is as 
if the leaf were rolled up, but in truth this form is merely a 
phenomenon of growth. The curvature results from the in- 
crease of the leaf, it is only another form of the wrinkling up, 
or turning at right angles by extension under limit." 

" The rolling up or imbrication of the petals in many flower- 
buds is a similar thing ; at an early period the small petals 
may be seen lying side by side, afterwards growing within the 
capsule, they become folded round one another." * * * 

" If a flower-bud be opened at a sufficiently early period, 
the stamens will be found as if moulded in the cavity between 
the pistil and the corolla, which cavity the anthers exactly 
fill ; the stalks lengthen at an after period. I have noticed 
also in a few instances, that in those flowers in which the 
petals are imbricated, or twisted together, the pistil is taper- 
ing as growing up between the petals ; in some flowers which 
have the petals so arranged in the bud as to form a dome (as 
the hawthorn ; e. g.), the pistil is flattened at the apex, and 
in the bud occupies a space precisely limited by the stamens 
below, and the enclosing petals above and at the sides. I 
have not, however, satisfied myself that this holds good in all 
cases." 

"Without endorsing all Mr. Ilinton's illustrations, to 
some of which exception might be taken, his conclusion 
may be accepted as a large instalment of the truth. It is, 
however, to be remarked, that in the case of organic growth, 
as in all other cases, the line of movement is in strictness 
the resultant of tractive and resistant forces; and that 
the tractive forces here form so considerable an element 



234 TI1E DIRECTION OF MOTION. 

that the formula is scarcely complete without them. The 
shapes of plants are manifestly modified by gravitation : 
the direction of each branch is not what it would have been 
were the tractive force of the Earth absent ; and every flower 
and leaf is somewhat altered in the course of development by 
the weight of its parts. Though in animals such effects are 
less conspicuous, yet the instances in which flexible organs 
have their directions in great measure determined by gravity, 
justify the assertion that throughout the whole organism the 
forms of parts must be affected by this force. 

The organic movements which constitute growth, are not, 
however, the only organic movements to be interpreted. 
There are also those which constitute function. And through- 
out these the same general principles are discernible. That 
the vessels along which blood, lymph, bile, and all the 
secretions, find their ways, are channels of least resistance, 
is a fact almost too conspicuous to be named as an illustration. 
Less conspicuous, however, is the truth, that the currents set- 
ting along these vessels are affected by the tractive force of 
the Earth : witness varicose veins ; witness the relief to an 
inflamed part obtained by raising it ; witness the congestion 
of head and face produced by stooping. And in the fact that 
dropsy in the legs gets greater by day and decreases at night, 
while, conversely, that cedematous fullness under the eyes 
common in debility, grows worse during the hours of reclin- 
ing and decreases after getting up, shows us how the trans- 
udation of fluid through the walls of the capillaries, varies ac- 
cording as change of position changes the effect of gravity in 
different parts of the body. 

It may be well in passing just to note the bearing of the 
principle on the development of species. From a dynamic 
point of view, iC natural selection " implies structural changes 
along lines of least resistance. The multiplication of any kind 
of plant or animal in localities that are favourable to it, is a 
growth where the antagonistic forces are less than elsewhere. 
And the preservation of varieties that succeed better than their 



THE DIRECTION OF MOTION. 235 

allies in coping with surrounding conditions, is the continu- 
ance of vital movement in those directions where the obstacles 
to it are most eluded. 

§ 79. Throughout the phenomena of mind the law enunci- 
ated is not so readily established. In a large part of them, 
as those of thought and emotion, there is no perceptible move- 
ment. Even in sensation and volition, which show us in one 
part of the body an effect produced by a force applied to an- 
other part, the intermediate movement is inferential rather 
than visible. Such indeed are the difficulties that it is not 
possible here to do more than briefly indicate the proofs which 
might be given did space permit. 

Supposing the various forces throughout an organism to be 
previously in equilibrium, then any part which becomes the 
seat of a further force, added or liberated, must be one from 
which the force, being resisted by smaller forces around, will 
initiate motion towards some other part of the organism. If 
elsewhere in the organism there is a point at which force is 
being expended, and which so is becoming minus a force which 
it before had, instead of plus a force which it before had not, 
and thus is made a point at which the re-action against sur- 
rounding forces is diminished ; then, manifestly, a motion tak- 
ing place between the first and the last of these points is a 
motion along the line of least resistance. IsTow a sensation 
implies a force added to, or evolved in, that part of the organ- 
ism which is its seat ; while a mechanical movement implies 
an expenditure or loss of force in that part of the organism 
which is its seat. Hence if, as we find to be the fact, motion is 
habitually propagated from those parts of an organism to which 
the external world adds forces in the shape of nervous impres- 
sions, to those parts of an organism which react on the external 
world through muscular contractions, it is simply a fulfil- 
ment of the law above enunciated. From this general 
conclusion we may pass to a more special one. When there 
is anything in the circumstances of an animal's life, involving 



235 THE DIRECTION OF MOTION. 

that a sensation in one particular place is habitually followed 
by a contraction in another particular place — when there is 
thus a frequently-repeated motion through the organism be- 
tween these places ; what must be the result as respects the 
line along which the motions take place ? Restoration of equi- 
librium between the points at which the forces have been 
increased and decreased, must take place through some chan- 
nel. If this channel is affected by the discharge — if the 
obstructive action of the tissues traversed, involves any 
reaction upon them, deducting from their obstructive 
power ; then a subsequent motion between these two points 
will meet with less resistance along this channel than the pre- 
vious motion met with ; and will consequently take this 
channel still more decidedly. If so, every repetition will still 
further diminish the resistance offered by this route ; and 
hence will gradually be formed between the two a permanent 
line of communication, differing greatly from the surrounding 
tissue in respect of the ease with which force traverses it. We 
see, therefore, that if between a particular impression and a 
particular motion associated with it, there is established a 
connexion producing what is called reflex action, the law that 
motion follows the line of least resistance, and that, if the 
conditions remain constant, resistance in any direction is dimin- 
ished by motion occurring in that direction, supplies an expla- 
nation. Without further details it will be manifest that 
a like interpretation may be given to the succession of all 
other nervous changes. If in the surrounding world there 
are objects, attributes, or actions, that usually occur together, 
the effects severally produced by them in the organism will be- 
come so connected by those repetitions which we call experience, 
that they also will occur together. In proportion to the fre- 
quency with which any external connexion of phenomena is 
experienced, will be the strength of the answering internal con- 
nexion of nervous states. Thus there will arise all degrees of 
cohesion among nervous states, as there are all degrees of com- 
monness among the surrounding co-existences and sequences' 



THE DIRECTION OF MOTION. 2o7 

that generate them : whence must result a general correspond- 
ence between associated ideas and associated actions in the 
environment.* 

The relation between emotions and actions may be similarly 
construed. As a first illustration let us observe what happens 
with emotions that are undirected by volitions. These, like 
feelings in general, expend themselves in generating organic 
changes, and chiefly in muscular contractions. As was 
pointed out in the last chapter, there result movements of 
the involuntaiy and voluntary muscles, that are great in pro- 
portion as the emotions are strong. It remains here to be 
pointed out, however, that the order in which these muscles 
are affected. is explicable only on the principle above set forth. 
Thus, a pleasurable or painful state of mind of but slight 
intensity, does little more than increase the pulsations of the 
heart. Why ? For the reason that the relation between 
nervous excitement and vascular contraction, being common 
to every genus and species of feeling, is the one of most 
frequent repetition ; that hence the nervous connexion is, in 
the way above shown, the one which offers the least resistance 
to a discharge ; and is therefore the one along which a feeble 
force produces motion. A sentiment or passion that is some- 
what stronger, affects not only the heart but the muscles of 
the face, and especially those around the mouth. Here the 
like explanation applies; since these muscles, being both com- 
paratively small, and, for purposes of speech, perpetually 
used, offer less resistance than other voluntary muscles 
to the nervo-motor force. By a further increase of emotion 
the respiratory and vocal muscles become perceptibly excited. 
Finally, under strong passion, the muscles in general of the 
trunk and limbs are violently contracted. Without saying 
that the facts can be thus interpreted in all their details (a 

* This paragraph is a re-statement, somewhat amplified, of an idea set forth in 
the Medico- Chirurgical Review for January, 1859 (pp. 189 and 190) ; and con- 
tains the germ of the intended fifth part of the Principles of Psychology \ which 
was withheld for the reasons given in the preface to that work 



233 THE. DIRECTION OF MOTION. 

task requiring data impossible to obtain) it may be safely said 
that the order of excitation is from muscles that are small and 
frequently acted on, to those which are larger and less fre- 
quently acted on. The single instance of laughter, which is 
an undirected discharge of feeling that affects first the 
muscles round the mouth, then those of the vocal and respir- 
atory apparatus, then those of the limbs, and then those of 
the spine ; * suffices to show that when no special route is 
opened for it, a force evolved in the nervous centres produces 
motion along channels w r hich offer the least resistance, and if 
it is too great to escape by these, produces motion along 
channels offering successively greater resistance. 

Probably it will be thought impossible to extend this 
reasoning so as to include volitions. Yet we are not without 
evidence that the transition from special desires to special 
muscular acts, conforms to the same principle. It may be 
shown that the mental antecedents of a voluntary movement, 
are antecedents which temporarily make the line along which 
this movement takes place, the line of least resistance. For 
a volition, suggested as it necessarily is by some previous 
thought connected with it by associations that determine the 
transition, is itself a representation of the movements that are 
willed, and of their sequences. But to represent in conscious- 
ness certain of our own movements, is partially to arouse the 
sensations accompanying such movements, inclusive of those 
of muscular tension — is partially to excite the appropriate 
motor-nerves and all the other nerves implicated. That is to 
say, the volition is itself an incipient discharge along a line 
which previous experiences have rendered a line of least re- 
sistance. And the passing of volition into action is simply a 
completion of the discharge. 

One corollary from this must be noted before proceeding ; 
namely, that the particular set of muscular movements bj 
ft-hich any object of desire is reached, are movements imply 

* For details see a pap^r on " The Physiology of Laughter," published ^ 
Macmillan's Magazine for March 1860. 



THE DIRECTION OF MOTION. 239 

ing the smallest total of forces to be overcome. As each feel- 
ing generates motion along the line of least resistance, it is 
tolerably clear that a group of feelings, constituting a more 
or less complex desire, will generate motion along a series of 
lines of least resistance. That is to say, the desired end will 
be achieved with the smallest expenditure of effort. Should 
it be objected that through want of knowledge or want of 
skill, a man often pursues the more laborious of two courses, 
and so overcomes a larger total of opposing forces than was 
necessary ; the reply is, that relatively to his mental state the 
course he takes is that which presents the fewest difficulties. 
Though there is another which in the abstract is easier, yet 
his ignorance of it, or inability to adopt it, is, physically con- 
sidered, the existence of an insuperable obstacle to the dis- 
charge of his energies in that direction. Experience obtained 
by himself, or communicated by others, has not established 
in him such channels of nervous communication as are re- 
quired to make tins better course the course of loast re- 
sistance to him. 

§ 80. As in individual animals, inclusive of man, motion 
follows lines of least resistance, it is to be inferred that among 
aggregations of men, the like will hold good. The changes 
in a society, being due to the joint actions of its members, the 
courses of such changes will be determined as are those of all 
ether changes wrought by composition of forces. 

Thus when we contemplate a society as an organism, and 
observe the direction of its growth, we find this direction to 
be that in which the average of opposing forces is the least. 
Its units have energies to be expended in self- maintenance 
and reproduction. These energies are met by various 
environing energies that are antagonistic to them — those of 
geological origin, those of climate, of wild animals, of other 
human races with whom they are at enmity or in competi- 
tion. And the tracts the society spreads over, are those in 
which there is the smallest total antagonism. Or, reducing 



240 TIIE DIRECTION OF MOTION. 

the matter to its ultimate terms, we may say that these social 
units have jointly and severally to preserve themselves and 
their offspring from those inorganic and organic forces which 
are ever tending to destroy them (either indirectly by oxi- 
dation and by undue abstraction of heat, or directly by bodily 
mutilation) ; that these forces are either counteracted by 
others which are available in the shape of food, clothing, 
habitations, and appliances of defence, or are, as far as may 
be, eluded ; and that population spreads in whichever di- 
rections there is the readiest escape from these forces, or the 
least exertion in obtaining the materials for resisting them, 
or both. For these reasons it happens that fertile 

valleys where water and vegetal produce abound, are early 
peopled. ^Sea-shores, too, supplying a large amount of easily- 
gathered food, are lines along which mankind have common- 
ly spread. The general fact that, so far as we can judge from 
the traces left by them, large societies first appeared in those 
tropical regions where the fruits of the earth are obtainable 
with comparatively little exertion, and where the cost of 
maintaining bodily heat is but slight, is a fact of like mean- 
ing. And to these instances may be added the allied one 
daily furnished by emigration ; which we see going on to- 
wards countries presenting the fewest obstacles to the 
self-preservation of individuals, and therefore to national 
growth. Similarly with that resistance to the move- 

ments of a society which neighbouring societies offer. Each 
of the tribes or nations inhabiting any region, increases in 
numbers until it outgrows its means of subsistence. In each 
there is thus a force ever pressing outwards on to adjacent 
areas — a force antagonized by like forces in the tribes or 
nations occupying those areas. And the ever- recurring wars 
that result — the conquests of weaker tribes or nations, and 
the over-running of their territories by the victors, are 
instances of social movements taking place in the directions 
of least resistance. Nor do the conquered peoples, when 
they escape extermination or enslavement, fail to show us 



THE DIRECTION OF MOTION. 24J 

movements that are similarly determined. For migrating as 
they do to less fertile regions — taking refuge in deserts or 
among mountains — moving in a direction where the re- 
sistance to social growth is comparatively great ; they still do 
this only under an excess of pressure in all other directions : 
the physical obstacles to self-preservation they encounter, 
being really less than the obstacles offered by the enemies 
from whom they fly. 

Internal social movements may also be thus interpreted. 
Localities naturally fitted for producing particular commodi- 
ties — that is, localities in which such commodities are got at 
the least cost of force — that is, localities in which the desires 
for these commodities meet with the least resistance ; become 
localities especially devoted to the obtainment of these com- 
modities. Where soil and climate render wheat a profitable 
crop, or a crop from which the greatest amount of life-sustain- 
ing power is gained by a given quantity of effort, the growth 
of wheat becomes the dominant industry. Where wheat can- 
not be economically produced, oats, or rye, or maize, or rice, 
or potatoes, is the agricultural staple. Along sea-shores men 
support themselves with least effort by catching fish ; and 
hence choose fishing as an occupation. And in places that 
are rich in coal or metallic ores, the population, finding that 
labour devoted to the raising of these materials brings a 
larger return of food and clothing than when otherwise di- 
rected, becomes a population of miners. This last 
instance introduces us to the phenomena of exchange ; which 
equally illustrate the general law. For the practice of 
barter begins as soon as it facilitates the fulfilment of men's 
desires, by diminishing the exertion needed to reach the ob- 
jects of those desires. "When instead of growing his own 
corn, weaving his own cloth, sewing his own shoes, each man 
began to confine himself to farming, or weaving, or shoemak- 
ing ; it was because each found it more laborious to make 
everything he wanted, than to make a great quantity of one 
thing and barter the surplus for the rest : by exchange, each 



242 THE DIRECTION OF MOTION. 

procured the necessaries of life without encountering so much 
resistance. Moreover, in deciding what commodity to pro- 
duce, each citizen was, as he is at the present day, guided in 
the same manner. For besides those local conditions which 
determine whole sections of a society towards the industries 
easiest for them, there are also individual conditions and indi- 
vidual aptitudes which to each citizen render certain occupa- 
tions preferable ; and in choosing those forms of activity 
which their special circumstances and faculties dictate, 
these social units are severally moving towards the objects 
of their desires in the directions which present to them the 
fewest obstacles. The process of transfer which com- 

merce pre-supposes, supplies another series of examples. So 
long as the forces to be overcome in procuring any necessary 
of life in the district where it is consumed, are less than the 
forces to be overcome in procuring it from an adjacent dis- 
trict, exchange does not take place. But when the adjacent 
district produces it with an economy that is not out-balanced 
by cost of transit — when the distance is so small and the 
route so easy that the labour of conveyance plus the labour 
of production is less than the labour of production in the con- 
suming district, transfer commences. Movement in the di- 
rection of least resistance is also seen in the establishment of 
the channels along which intercourse takes place. At the 
outset, when goods are carried on the backs of men and 
horses, the paths chosen are those which combine shortness 
with levelness and freedom from obstacles — those which are 
achieved with the smallest exertion. And in the subsequent 
formation of each highway, the course taken is that which 
deviates horizontally from a straight line so far only as is 
needful to avoid vertical deviations entailing greater labour 
in draught. The smallest total of obstructive forces deter- 
mines the route, evm in seemingly exceptional cases ; as 
where a detour is made to avoid the opposition of a land- 
owner. All subsequent improvements, ending in macada- 
mized roads, canals, and railways, which reduce the an- 



THE DIRECTION OF MOTION. 243 

tagonism of friction and gravity to a minimum, exemplify 
the same truth. After there comes to be a choice of roads 
between one point and another, we still see that the road 
chosen is that along which the cost of transit is the least: 
cost being the measure of resistance. Even where, time being 
a consideration, the more expensive route is followed, it is so 
because the loss of time involves loss of force. When, 

division of labour having been carried to a considerable ex- 
tent and means of communication made easy, there arises a 
marked localization of industries, the relative growths of the 
populations devoted to them may be interpreted on the same 
principle. The influx of people to each industrial centre, as 
well as the rate of multiplication of those already inhabiting 
it, is determined by the payment for labour ; that is — by the 
quantity of commodities which a given amount of effort will 
obtain. To say that artisans flock to places where, in conse- 
quence of facilities for production, an extra proportion of pro- 
duce can be given in the shape of wages ; is to say that they 
flock to places where there are the smallest obstacles to the 
support of themselves and families. Hence, the rapid in- 
crease of number which occurs in such places, is really a 
social growth at points where the opposing forces are the 
least. 

Nor is the law less clearly to be traced in those functional 
changes daily going on. The flow of capital into businesses 
yielding the largest returns ; the buying in the cheapest 
market and selling in the dearest ; the introduction of more 
economical modes of manufacture ; the development of better 
agencies for distribution ; and all those variations in the 
currents of trade that are noted in our newspapers and tele- 
grams from hour to hour ; exhibit movement taking place in 
directions where it i3 met by the smallest total of opposing 
forces. For if we analyze each of these changes — if instead 
of interest on capital we read surplus of products which re- 
mains after maintenance of labourers ; if we so interpret 
large interest or large surplus to imply labour expended with 



244 THE DIRECTION OF MOTION. 

the greatest results ; and if labour expended with, the greatest 
results means muscular action so directed as to evade ob- 
stacles as far as possible ; we see that all these commercial 
phenomena are complicated motions set up along lines of 
least resistance. 

Objections of two opposite kinds will perhaps be made to 
these sociological applications of the law. By some it may 
be said that the term force as here used, is used metaphori- 
cally — that to speak of men as impelled in certain directions 
by certain desires, is a figure of speech and not the statement 
of a physical fact. The reply is, that the foregoing illustra- 
tions are to be interpreted literally, and that the processes de- 
scribed are physical ones. The pressure of hunger is an 
actual force — a sensation implying some state of nervous ten- 
sion ; and the muscular action which the sensation prompts 
is really a discharge of it in the shape of bodily motion — a 
discharge which, on analyzing the mental acts involved, will 
be found to follow lines of least resistance. Hence the 
motions of a society whose members are impelled by this or 
any other desire, are actually, and not metaphorically, to be 
understood in the manner shown. An opposite ob- 

jection may possibly be, that the several illustrations given 
are elaborated truisms ; and that the law of direction of mo- 
tion being once recognized, the fact that social movements, 
in common with all others, must conform to it, follows inevit- 
ably. To this it may be rejoined, that a mere abstract asser- 
tion that social movements must do this, would carry no con- 
viction to the majority ; and that it is needful to show how 
they do it. For social phenomena to be unified with pheno- 
mena of simpler kinds, it is requisite that such generaliza- 
tions as those of political economy shall be reduced to equi- 
valent propositions expressed in terms of force and motion. 

Social movements of these various orders severally conform 
to the two derivative principles named at the outset. In the 
first place we may observe how, once set up in given di- 
rections, such movements, like all others, tend to continue ia 



THE DIRECTION OF MOTION. 245 

these directions. A commercial mania or panic, a current 
of commodities, a social custom, a political agitation, or a 
popular delusion, maintains its course for a longtime after its 
original source has ceased ; and requires antagonistic forces 
lo arrest it. In the second place it is to be noted that in 
proportion to the complexity of social forces is the tortuous- 
ness of social movements. The involved series of muscular 
contractions gone through by the artizan, that he may get 
the wherewithal to buy a loaf lying at the baker's next door, 
show us how extreme becomes the indirectness of motion 
when the agencies at work become very numerous — a truth 
still better illustrated by the more public social actions ; as 
those which end in bringing a successful man of business, 
towards the close of his life, into parliament. 

§ 81. And now of the general truth set forth in this 
chapter, as of that dealt with in the last, let us ask — what is 
our ultimate evidence ? Must we accept it simply as an em- 
pirical generalization ? or may it be established as a corollary 
from a still deeper truth ? The reader will anticipate the 
answer. We shall find it deducible from that datum of 
consciousness which underlies all science. 

Suppose several tractive forces, variously directed, to be act- 
ing on a given body. By what is known among mathema- 
ticians as the composition of forces, there may be found for 
any two of these, a single force of such amount and direction 
as to produce on the body an exactly equal effect. If in the 
direction of each of them there be drawn a straight line, 
and if the lengths of these two straight lines be made pro- 
portionate to the amounts of the forces ; and if from the end 
of each line there be drawn a line parallel to the other, so 
as to complete a .parallelogram ; then the diagonal of this 
parallelogram represents the amount and direction of a force 
that is equivalent to the two. Such a resultant force, as it is 
called, may be found for any pair of forces throughout the 
group. Similarly, for any pair of such resultants a single 



246 tup: direction of motion. 

resultant may bo found. And by repeating this course, all of 
tliem may be reduced to two. If these two are equal and 
opposite — that is, if there is no line of greatest traction, 
motion does not take place. If they are opposite but not 
equal, motion takes place in the direction of the greater. 
And if they are neither equal nor opposite, motion takes 
place in the direction of their resultant. For in either of 
these cases there is an unantagonized force in one direction. 
And this residuary force that is not neutralized by an oppos- 
ing one, must move the body in the direction in which it is 
acting. To assert the contrary is to assert that a force can 
be expended without effect — without generating an equiva- 
lent force ; and by so implying that force can cease to exist, 
this involves a denial of the persistence of force. It 

needs scarcely be added that if in place of tractions we take 
resistances, the argument equally holds ; and that it holds also 
where both tractions and resistances are concerned. Thus 
the law that motion follows the line of greatest traction, or 
the line of least resistance, or the resultant of the two, is a 
necessary deduction from that primordial truth which tran- 
scends proof. 

Reduce the proposition to its simplest form, and it becomes 
still more obviously consequent on the persistence of force. 
Suppose two weights suspended over a pulley or from the ends 
of an equal-armed lever; or better still — suppose two men 
pulling against each other. In such cases we say that the 
heavier weight will descend, and that the stronger man 
will draw the weaker towards him. But now, if we are asked 
how we know which is the heavier weight or the stronger 
man ; we can only reply that it is the one producing motion 
in the direction of its pull. Our only evidence of excess of 
force is the movement it produces. But if of two opposing 
tractions we can know one as greater than the other only by 
the motion it generates in its own direction, then the assertion 
that motion occurs in the direction of greatest traction is a 
truism. When, going a step further back, we seek a warrant 



THE DIRECTION OF MOTION. 247 

for the assumption that of the two conflicting forces, that is 
the greater which produces motion in its own direction, we 
find no other than the consciousness that such part of the 
greater force as is unneutralized by the lesser, must produce 
its effect — the consciousness that this residuary force cannot 
disappear, but must manifest itself in some equivalent change 
— the consciousness that force is persistent. Here too, 

as before, it may be remarked that no amount of varied illus- 
trations, like those of which this chapter mainly consists, can 
give greater certainty to the conclusion thus immediately 
drawn from the ultimate datum of consciousness. For in all 
cases, as in the simple ones just given, we can identify the 
greatest force only by the resulting motion. It is impossible 
for us ever to get evidence of the occurrence of motion in any 
other direction than that of the greatest force ; since our 
measure of relative greatness among forces is their relative 
power of generating motion. And clearly, while the compara- 
tive greatness of forces is thus determined, no multiplication 
of instances can add certainty to a law of direction of move- 
ment which follows immediately from the persistence of force. 
From this same primordial truth, too, may be deduced the 
principle that motion once set up along any line, becomes it- 
self a cause of subsequent motion along that line. The me- 
chanical axiom that, if left to itself, matter moving in any di- 
rection will continue in that direction with undiminished 
velocity, is but an indirect assertion of the persistence of 
force ; since it is an assertion that the force manifested in 
the transfer of a body along a certain length of a certain 
line in a certain time, cannot disappear without producing 
some equal manifestation — a manifestation which, in the ab- 
sence of conflicting forces, must be a further transfer in the 
same direction at the same velocity. In the case of 

matter traversing matter the like, inference is necessitated. 
Here indeed the actions are much more complicated., A liquid 
that follows a certain channel through or over a solid, as water 
along the Earth's surface, loses part of its motion in the shape 



248 THE DIRECTION OF MOTION. 

of heat, through friction and collision with the matters form. 
ing its bed. A further amount of its motion may be absorbed 
in overcoming forces which it liberates ; as when it loosens a 
mass which falls into, and blocks up, its channel. But after 
these deductions by transformation into other modes of force, 
any further deduction from the motion of the water is at the 
expense of a reaction on the channel, which by so much di- 
minishes its obstructive power : such reaction being shown in 
the motion acquired by the detached portions which are car- 
ried away. The cutting out of river-courses is a perpetual 
illustration of this truth. Still more involved is the 

case of motion passing through matter by impulse from part 
to part ; as a nervous discharge through animal tissue. Some 
chemical change may be wrought along the route traversed, 
which may render it less fit than before for cony-eying a current. 
Or the motion may itself be in part metamorphosed into some 
obstructive form of force ; as in metals, the conducting power 
of which is, for the time, decreased by the heat which the 
passage of electricity itself generates. The real question is, 
however, what structural modification, if any, is produced 
throughout the matter traversed, apart from incidental dis- 
turbing forces — apart from everything but the necessary re- 
sistance of the matter : that, namely, which results from the 
inertia of its units. If we confine our attention to that 
part of the motion which, escaping transformation, continues 
its course, then it is a corollary from the persistence of 
force that as much of this remaining motion as is taken 
up in changing the positions of the units, must leave these by 
so much less able to obstruct subsequent motion in the same 
direction. 

Thus in all the changes heretofore and at present displayed 
by the Solar System ; in all those that have gone on and are 
still going on in the Earth's crust ; in all processes of organic 
development and function ; in all mental actions and the 
effects they work on the body ; and in all modifications of 
structure and activity in societies ; the implied movements are 



THE DIRECTION OE MOTION. 



219 



of necessity determined in the manner above set forth. 
Wlierever we see motion, its direction must be that of the 
greatest force. Wherever we see the greatest force to be 
acting in a given direction, in that direction motion must 
ensue. These are not truths holding only of one class, or of 
some classes, of phenomena ; but they are among those 
universal truths by which our knowledge of phenomena in 
general is unified. 



CHAPTER X. 

THE RHYTHM OF MOTION. 

i 

§ 8i. When the pennant of a vessel lying becalmed first 

shows the coming breeze, it does so by gentle undulations 

that travel from its fixed to its free end. Presently the sails 

begin to flap ; and their blows against the mast increase in 

rapidity as the breeze rises. Even when, being fully bellied 

out, they are in great part steadied by the strain of the yards 

and cordage, their free edges tremble with each stronger 

gust. And should there come a gale, the jar that is felt on 

laying hold of the shrouds shows that the rigging vibrates ; 

while the rush and whistle of the wind prove that in it, also, 

rapid undulations are generated. Ashore the conflict between 

the current of air and the things it meets results in a like 

rhythmical action. The leaves all shiver in the blast ; each 

branch oscillates ; and every exposed tree sways to and fro. ; 

The blades of grass and dried bents in the meadows, and still 

better the stalks in the neighbouring corn-fields, exhibit the 

same rising and falling movement. Nor do the more stable 

objects fail to do the like, though in a less manifest fashion ; 

as witness the shudder that may be felt throughout a house 

during the paroxysms of a violent storm. Streams of 

water produce in opposing objects the same general effects as 

do streams of air. Submerged weeds growing in the middle 

of a brook, undulate from end to end. Branches brought I 

down by the last flood, and left entangled at the bottom 



THE RHYTHM OF MOTION. 251 

where the current is rapid, are thrown into a state of up and 
down movement that is slow or quick in proportion as they 
are large or small ; and where, as in great rivers like the 
Mississippi, whole trees are thus held, the name " sawyers/' 
by which they are locally known, sufficiently describes the 
rhythm produced in them. Note again the effect of the 
antagonism between the current and its channel. In shallow 
places, where the action of the bottom on the water flowing 
over it is visible, we see a ripple produced — a series of undula- 
tions. And if we study the action and re-action going on 
between the moving fluid and its banks, we still find the 
principle illustrated, though in a different way. For in every 
rivulet, as in the mapped- out course of every great river, the 
bends of the stream from side to side throughout its tortuous 
course constitute a lateral undulation — an undulation so in- 
evitable that even an artificially straightened channel is 
eventually changed into a serpentine one. Analogous phe- 
nomena may be observed where the water is stationary and 
the solid matter moving. A stick drawn laterally through 
the water with much force, proves by the throb which it 
communicates to the hand that it is in a state of vibration. 
Even where the moving body is massive, it only requires that 
great force should be applied to get a sensible effect of like 
e kind : instance the screw of a screw- steamer, which instead 
! of a smooth rotation falls into a rapid rhythm that sends a 
. tremor through the whole vessel. The sound which 

; results when a bow is drawn- over a violin-string, shows us 
J vibrations produced by the movement of a solid over a solid. 
i In lathes and planing machines, the attempt to take off a 
I thick shaving causes a violent jar of the whole apparatus, and 
I the production of a series of waves on the iron or w T ood that 

I is cut. Every boy in scraping his slate-pencil finds it 
scarcely possible to help making a ridged surface. If you 
! roll a ball along the ground or over the ice, there is always 
J more or less up and down movement — a movement that is 
/ visible while the velocity is considerable, but becomes too 



252 THE RHYTHM OF MOTION. 

small and rapid to be seen by the unaided e} r e as the velocity 
diminishes. However smooth the rails, and however per- 
fectly built the carriages, a railway-train inevitably gets into 
oscillations, both lateral and vertical. Even where moving 
matter is suddenly arrested by collision, the law is still illus- 
trated ; for both the body striking and the body struck are 
made to tremble ; and trembling is rhythmical movement. 
Little as we habitually observe it, it is yet certain that the 
impulses our actions impress from moment to moment on 
surrounding objects, are propagated through them in vibra- 
tions. It needs but to look through a telescope of high 
power, to be convinced that each pulsation of the heart gives 
a jar to the whole room. If we pass to motions of 

another order — those namely which take place in the etherial 
medium — we still find the same thing. Every fresh dis- 
covery confirms the hypothesis that light consists of undula- 
tions. The rays of heat, too, are now found to have a like 
fundamental nature : their undulations differing from those 
of light only in their comparative lengths. Nor do the move- 
ments of electricity fail to furnish us with an illustration ; 
though one of a different order. The northern aurora may 
often be observed to pulsate with waves of greater brightness ; 
and the electric discharge through a vacuum shows us by its 
stratified appearance that the current is not uniform, but 
comes in gushes of greater and lesser intensit} r . Should 

it be said that at any rate there are some motions, as those of 
projectiles, which are not rhythmical, the reply is, that the 
exception is apparent only ; and that these motions would be 
rhythmical if they were not interrupted. It is common to 
assert that the trajectory of a cannon ball is a parabola ; and 
it is true that (omitting atmospheric resistance) the curve de- 
scribed differs so slightly from a parabola that it may practi- 
cally be regarded as one. But, strictly speaking, it is a por- 
tion of an extremely eccentric ellipse, having the Earth's 
centre of gravity for its remoter focus ; and but for its arrest 
by the substance of the Earth, the cannon ball would travel 



THE RHYTHM OF MOTION. 253 

round that focus and return to the point whence it started ; 
again to repeat this slow rhythm. Indeed, while seeming at 
first sight to do the reverse, the discharge of a cannon 
furnishes one of the best illustrations of the principle enunci- 
ated. The explosion produces violent undulations in the 
surrounding air. The whizz of the shot, as it flies towards 
its mark, is due to another series of atmospheric undulations. 
And the movement to and from the Earth's centre, which the 
cannon ball is beginning to perform, being checked by solid 
matter, is transformed into a rhythm of another order ; 
namely, the vibration which the blow sends through neigh- 
bouring bodies.* 

Rhythm is very generally not simple but compound. 
There are usually at work various forces, causing undulations 
differing in rapidity ; and hence it continually happens that 
besides the primary rhythms there are secondary rhythms, 
produced by the periodic coincidence and antagonism of the 
primary ones. Double, triple, and even quadruple rhythms, 
are thus generated. One of the simplest instances is afforded 
by what in acoustics are known as " beats :" recurring inter- 
vals of sound and silence which are perceived when two notes 
of nearly the same pitch are struck together ; and which are 
due to the alternate correspondence and antagonism of the 
atmospheric waves. In like manner the various phenomena 
due to what is called interference of light, severally result 
from the periodic agreement and disagreement of etherial 
undulations — undulations which, by alternately intensi- 
fying and neutralizing each other, produce intervals of 
increased and diminished light. On the sea-shore may be 
noted sundry instances of compound rhythm. We have 
that of the tides, in which the daily rise and fall under- 
goes a fortnightly increase and decrease, due to the alter- 
nate coincidence and antagonism of the solar and lunar 

• After having for some years supposed myself alone in the belief that all mo- 
rion is rhythmical, I discovered that my friend Professor Tyndall also held this 
doctrine. 



25 i THE RHYTHM OF MOTION. 

attractions. We have again that which is perpetually 
furnished by the surface of the sea : every large wave bear- 
ing smaller ones on its sides, and these still smaller ones ; 
with the result that each flake of foam, along with the por- 
tion of water bearing it, undergoes minor ascents and descents 
of several orders while it is being raised and lowered by the 
greater billows. A quite different and very interesting 
example of compound rhythm, occurs in the little rills which, 
at low tide, run over the sand out of the shingle banks above. 
Where the channel of one of these is narrow, and the stream 
runs strongly, the sand at the bottom is raised into a seriea 
of ridges corresponding to the ripple of the water. On 
watching for a short time, it will be seen that these ridges 
are being raised higher and the ripple growing stronger ; 
until at length, the action becoming violent, the whole series 
of ridges is suddenly swept away, the stream runs smoothly, 
and the process commences afresh. Instances of still more 
complex rhythms might be added ; but they will come more 
appropriately in connexion with the several kinds of cosniical 
changes, hereafter to be dealt with. 

From the ensemble of the facts as above set forth, it will be 
seen that rhythm results wherever there is a conflict of forces 
not in equilibrium. If the antagonist forces at any point are 
balanced, there is rest ; and in the absence of motion there 
can of course be no rhythm. But if instead of a balance 
there is an excess of force in one direction — if, as necessarily 
follows, motion is set up in that direction ; then for that 
motion to continue uniformly in that direction, it is requisite 
that the moving matter should, notwithstanding its unceasing 
change of place, present unchanging relations to the sources 
of force by which its motion is produced and opposed. This 
however is impossible. Every further transfer through space 
must alter the ratio between the forces concerned — must in- 
crease or decrease the predominance of one force over the 
other — must prevent uniformity of movement. And if the 
movement cannot be uniform, then, in the absence of accelera- 



THE RHYTHM OF MOTION. 255 

tion or retardation continued through infinite time and space, 
(results which cannot be conceived) the only alternative is 
rhythm. 

A secondary conclusion must not be omitted. In the last 
chapter we saw that motion is never absolutely rectilinear ; 
and here it remains to be added that, as a consequence, rhythm 
is necessarily incomplete. A truly rectilinear rhythm can 
arise only when the opposing forces are in exactly the same 
line ; and the probabilities against this are infinitely great. 
To generate a perfectly circular rhythm, the two forces con- 
cerned must be exactly at right angles to each other, and 
must have exactly a certain ratio ; and against this the pro- 
babilities are likewise infinitely great. All other proportions 
and directions of the two forces will produce an ellipse of 
greater or less eccentricity. And when, as indeed always 
happens, above two forces are engaged, the curve described 
must be more complex ; and cannot exactly repeat itself. So 
that in fact throughout nature, this action and re-action of 
forces never brings about a complete return to a previous 
state. Where the movement is much involved, and especially 
where it is that of some aggregate whose units are partially 
independent, anything like a regular curve is no longer 
traceable ; we see nothing more than a general oscillation. 
And on the completion of any periodic movement, the degree 
in which the state arrived at differs from the state de- 
parted from, is usually marked in proportion as the influences 
at work are numerous. 

§ 83. That spiral arrangement so general among the more 
diffused nebuloe — an arrangement which must be assumed by 
matter moving towards a centre of gravity through a resist- 
ing medium — shows us the progressive establishment of 
revolution, and therefore of rhythm, in those remote spaces 
which the nebuloe occupy. Double stars, moving round com- 
mon centres of gravity in periods some of which are now 
ascertained, exhibit settled rhythmical actions in distant parta 



256 THE RHYTHM OF MOTION. 

of our siderial system. And another fact which, though of a 
different order, has a like general significance, is furnished by 
variable stars — stars which alternately brighten and fade. 

The periodicities of the planets, satellites, and comets, are 
so familiar that it would be inexcusable to name them, were 
it not needful here to point out that they are so many grand 
illustrations of this general law of movement. But besides 
the revolutions of these bodies in their orbits (all more or less 
excentric) and their rotations on their axes, the Solar System 
presents us with various rhythms of a less manifest and more 
complex kind. In each planet and satellite there is the revo- 
lution of the nodes — a slow change in the position of the 
orbit-plane, which after completing itself commences afresh. 
There is the gradual alteration in the length of the axis 
major of the orbit ; and also of its excentricity : both of 
which are rhythmical alike in the sense that they alternate 
between maxima and minima, and in the sense that the pro- 
gress from one extreme to the other is not uniform, but is 
made with fluctuating velocity. Then, too, there is the revo- 
lution of the line of apsides, which in course of time moves 
round the heavens — not regularly, but through complex 
oscillations. And further we have variations in the directions 
of the planetary axes — that known as nutation, and that 
larger gyration which, in the case of the Earth, causes the 
precession of the equinoxes. These rhythms, already 

more or less compound, are compounded with each other. 
Such an instance as the secular acceleration and retardation 
of the moon, consequent on the varying excentricity of the 
Earth's orbit, is one of the simplest. Another, having more 
important consequences, results from the changing direction 
of the axes of rotation in planets whose orbits are decidedly 
excentric. Every planet, during a certain long period, pre- 
sents more of its northern than of its southern hemisphere to 
the sun at the time of its nearest approach to him ; and then 
again, during a like period, presents more of its southern 
hemisphere than of its northern — a recurring coincidence 



THE RHYTHM OF MOIIOTs. "257 

which, though causing in some planets no sensible alterations 
of climate, involves in the case of the Earth an epoch of 
21,000 years, during which each hemisphere goes through a 
cjxle of temperate seasons, and seasons that are extreme in 
their heat and cold. Nor is this all. There is even a varia- 
tion of this variation. For the summers and winters of the 
whole Earth become more' or less strongly contrasted, as the 
excentricity of its orbit increases and decreases. Hence 
during increase of the excentricity, the epochs of moderately 
contrasted seasons and epochs of strongly contrasted seasons, 
through which alternately each hemisphere passes, must grow 
more and more different in the degrees of their contrasts ; 
and contrariwise during decrease of the excentricity. . So 
that in the quantity of light and heat which any portion of 
the Earth receives from the sun, there goes on a quadruple 
rhythm : that of day and night ; that of summer and win- 
ter ; that due to the changing position of the axis at perihe- 
lion and aphelion, taking 21,000 years to complete ; and that 
involved by the variation of the orbits excentricity, gono 
through in millions of years. 

§ 84. Those terrestrial processes whose dependence on the 
eolar heat is direct, of course exhibit a rhythm that corre- 
sponds to the periodically changing amount of heat which 
each part of the Earth receives. The simplest, though the 
least obtrusive, instance is supplied by the magnetic variations. 
In these there is a diurnal increase and decrease, an annual 
increase and decrease, and a decennial increase and decrease ; 
the latter answering to a period during which the solar spots 
become alternately abundant and scarce : besides which known 
variations there are probably others corresponding with the 
astronomical cycles just described. More obvious examples 
are furnished by the movements of the ocean and the atmo- 
sphere. Marine currents from the equator to the poles above, 
and from the poles to the equator beneath, show us an un- 
ocasing backward and forward motion throughout this vast 



258 THE RHYTHM OF MOTION. 

mass of water — a motion varying in amount according to the 
seasons, and compounded with smaller like motions of local 
origin. The similarly- caused general currents in the air, have 
similar annual variations similarly modified. Irregular as 
they are in detail, we still see in the monsoons and other tropi- 
cal atmospheric disturbances, or even in our own equinoctial 
gales and spring east winds, a periodicity sufficiently decid- 
ed. Again, we have an alternation of times during 
which evaporation predominates with times during which con- 
densation predominates : shown in the tropics by strongly 
marked rainy seasons and seasons of drought, and in the 
temperate zones by corresponding changes of which the pe- 
riodicity, though less definite, is still traceable. The diffusion 
and precipitation of water, besides the slow alternations 
answering to different parts of the year, furnish us with ex- 
amples of rhythm of a more rapid kind. During wet 
weather, lasting, let us say, over some weeks, the tendency 
to condense, though greater than the tendency to evaporate, 
does not show itself in continuous rain ; but the period is 
made up of rainy days and days that are wholly or partially 
fair. Nor is it in this rude alternation only that the law is 
manifested. During any day throughout this wet weather a 
minor rhythm is traceable ; and especially so when the ten ■ 
dencies to evaporate and to condense are nearly balanced. 
Among mountains this minor rhythm and its causes may be 
studied to great advantage. Moist winds, which do not pre- 
cipitate their contained water in passing over the compara- 
tively warm lowlands, lose so much heat when they reach 
the cold mountain peaks, that condensation rapidly takes 
place. "Water, however, in passing from the gaseous to the 
fluid state, gives out a considerable amount of heat ; and 
hence the resulting clouds are warmer than the air that pre- 
cipitates them, and much warmer than the high rocky sur- 
faces round which they fold themselves. Hence in the 
course of the storm, these high rocky surfaces are raised in 
temperature, partly by radiation from the enwrapping cloud, 



THE RHYTHM OF MOTION. 2^° 

partly by contact of the falling rain- drops. Giving off more 
heat than before, they no longer lower so greatly the temper- 
ature of the air passing oyer them ; and so cease to precipi- 
tate its contained water. The clouds break ; the sky begins 
to clear ; and a gleam of sunshine promises that the day is 
going to be fine. But the small supply of heat which the 
cold mountain's sides have received, is soon lost : especially 
when the dispersion of the clouds permits free radiation into 
space. Yery soon, therefore, these elevated surfaces, becom- 
ing as cold as at first, (or perhaps even colder in virtue of tho 
evaporation set up,) begin again to condense the vapour in 
the air above ; and there comes another storm, followed by 
the same effects as before. In lowland regions this action 
and reaction is usually less conspicuous, because the contrast 
of temperatures is less marked. Even here, however, it may 
be traced ; and that not only on showery days, but on days 
of continuous rain ; for in these we do not see uniformity : 
always there are fits of harder and gentler rain that are pro- 
bably caused as above explained. 

Of course these meteorologic rhythms involve something 
corresponding to them in the changes wrought by wind and 
water on the Earth's surface. Variations in the quantities of 
sediment brought down by rivers that rise and fall with the 
seasons, must cause variations in the resulting strata — alter- 
nations of colour or quality in the successive laminae. Beds 
formed from the detritus of shores worn down and carried 
away by the waves, must similarly show periodic differences 
answering to the periodic winds of the locality. In so far as 
frost influences the rate of denudation, its recurrence is a 
factor in the rhythm of sedimentary deposits. And the 
geological changes produced by glaciers and icebergs must 
similarly have their alternating periods of greater and less 
intensity. 

There is evidence also that modifications in the Earth's 
crust due to igneous action have a certain periodicity. Vol- 
canic eruptions are not continuous but intermittent, and as 



260 



THE RHYTHM OF MOTION. 



far as the data enable us to judge, have a certain average 
rate of recurrence ; which rate of recurrence is complicated 
by rising into epochs of greater activity and falling into 
epochs of comparative quiescence. So too is it with earth 
quakes and the elevations or depressions caused by them. Al 
the mouth of the Mississippi, the alternation of strata gives 
decisive proof of successive sinkings of the surface, that 
have taken place at tolerably equal intervals. Everywhere, 
in the extensive groups of conformable strata that imply 
small subsidences recurring with a certain average frequency, 
we see a rhythm in the action and reaction between the 
Earth's crust and its molten contents — a rhythm compounded 
with those slower ones shown in the termination of groups of 
strata, and the commencement of other groups not con- 
formable to them. There is even reason for suspect- 
ing a geological periodicity that is immensely slower and far 
wider in its effects ; namely, an alternation of those vast up- 
heavals and submergencies by which continents are produced 
where there were oceans, and oceans where there were conti- 
nents. For supposing, as we may fairly do, that the Earth's 
crust is throughout of tolerably equal thickness, it is manifest 
that such portions of it as become most depressed below the 
average level, must have their inner surfaces most exposed 
to the currents of molten matter circulating within, and will 
therefore undergo a larger amount of what may be called 
igneous denudation ; while, conversely, the withdrawal of the 
inner surfaces from these currents where the Earth's crust is 
most elevated, will cause a thickening more or less compens- 
ating the aqueous denudation going on externally. Hence 
those depressed areas over which the deepest oceans lie, being 
gradually thinned beneath and not covered by much sedi- 
mentary deposit above, will become areas of least resistance, 
and will then begin to yield to the upward pressure of the 
Earth's contents ; whence will result, throughout such areas, 
long continued elevations, ceasing only when the reverse state 
of things has been brought about. Whether this speculation 



THE RHYTHM OF MOTION. 261 

be well or ill founded, does not however affect the general 
conclusion. Apart from it we have sufficient evidence that 
geologic processes are rhythmical. 

§ 85. Perhaps nowhere are the illustrations of rhythm 
so numerous and so manifest as among the phenomena of life. 
Plants do not, indeed, usually show us any decided periodi- 
cities, save those determined by day and night and by the 
seasons. But in animals we have a great variety of move- 
ments in which the alternation of opposite extremes goes on 
with all degrees of rapidity. The swallowing of food is 
effected by a wave of constriction passing along the oesopha- 
gus ; its digestion is accompanied by a muscular action of the 
stomach that is also undulatory ; and the peristaltic motion of 
the intestines is of like nature. The blood obtained from this 
food is propelled not in a uniform current but in pulses ; and 
it is aerated by lungs that alternately contract and expand. All 
locomotion results from oscillating movements : even where it 
is apparently continuous, as in many minute forms, the mi- 
croscope proves the vibration of cilia to be the agency by 
which the creature is moved smoothly forwards. 

Primary rhythms of the organic actions are compounded 
with secondary ones of longer duration. These various 
modes of activity have their recurring periods of increase and 
decrease. We see this in the periodic need for food, and in the 
periodic need for repose. Each meal induces a more rapid 
rhythmic action of the digestive organs ; the pulsation of 
the heart is accelerated ; and the inspirations become more 
frequent. During sleep, on the contrary, these several 
movements slacken. So that in the course of the twenty- 
four hours, those small undulations of which the different 
kinds of organic action are constituted, undergo one long 
wave of increase and decrease, complicated with several 
minor waves. Experiments have shown that there 

are still slower ■ rises and ■ falls of functional activity. 
Waste and assimilation are not balanced by every meal, but 



262 THE RHYTHM OF MOTION. 

one or other maintains for some time a slight excess ; so that 
a person in ordinary health is found to undergo an increase 
and decrease of weight during recurring intervals of tolerable 
equalit}'. Besides these regular periods there are still longei 
and comparatively irregular ones ; namely, those alternations 
of greater and less vigour, which even healthy people expe- 
rience. So inevitable are these oscillations that even men in 
training cannot be kept stationary at their highest power, but 
when they have reached it begin to retrograde. Fur- 

ther evidence of rhythm in the vital movements is fur- 
nished by invalids. Sundry disorders are named from the 
intermittent character of their symptoms. Even where the 
periodicity is not very marked, it is mostly traceable. Patients 
rarely if ever get uniformly worse ; and convalescents have 
usually their days of partial relapse or of less decided ad- 
vance. 

Aggregates of living creatures illustrate the general truth 
in other ways. If each species of organism be regarded as a 
whole, it displays two kinds of rhythm. Life as it exists in 
all the members of such species, is an extremely complex kind 
of movement, more or less distinct from the kinds of move- 
ment which constitute life in other species. In each indi- 
vidual of the species, this extremely complex kind of move- 
ment begins, rises to its climax, declines, and ceases in 
death. And every successive generation thus exhibits a wave 
of that peculiar activity characterizing the species as a 
whole. The other form of rhythm is to be traced in 

that variation of number which each tribe of animals and 
plants is ever undergoing. Throughout the unceasing con- 
flict between the tendency of a species to increase and the 
antagonistic tendencies, there is never an equilibrium : one 
always predominates. In the case even of a cultivated plant 
or domesticated animal, where artificial means are used to 
maintain the supply at a uniform level, we still see that oscil- 
lations of abundance and scarcity cannot be avoided. And 
among the creatures uncared for by man, such oscillations 



THE RHYTHM OF MOTION. O53 

are usually more marked. After a race of organisms has 
been greatly thinned by enemies or lack of food, its surviving 
members become more favourably circumstanced than usual. 
During the decline in their numbers their food has grown 
relatively more abundant ; while their enemies have diminish- 
ed from want of prey. The conditions thus remain for 
some time favourable to their increase ; and they multiply 
rapidly. By and by their food is rendered relatively scarce, 
at the same time that their enemies have become more 
numerous ; and the destroying influences being thus in excess, 
their number begins to diminish again. Yet one 

more rhythm, extremely slow in its action, may be traced in 
the phenomena of Life, contemplated under their most general 
aspect. The researches of palaeontologists show that there 
have been going on, during the vast period of which our sedi- 
mentary rocks bear record, successive changes of organic 
forms. Species have appeared, become abundant, and then 
disappeared. Genera, at first constituted of but few species, 
have for a time gone on growing more multiform ; and then 
have begun to decline in the number of their subdivisions : 
leaving at last but one or two representatives, or none at all. 
Dining longer epochs whole orders have thus arisen, culmin- 
ated, and dwindled away. And even these wider divisions con- 
taining many orders have similarly undergone a gradual rise, 
a high tide, and a long- continued ebb. The stalked Crinoidea, 
for example, which, during the carboniferous epoch, became 
abundant, have almost disappeared : only a single specie3 
being extant. Once a large family of molluscs, the Braclrio- 
poda have now become rare. The shelled Cephalopods, at 
one time dominant among the inhabitants of the ocean, both in 
number of forms and of individuals, are in our day nearly 
extinct. And after an " age of reptiles/' there has come an 
age in which reptiles have been in great measure supplanted 
by mammals. "Whether these vast rises and falls of different 
kinds of life ever undergo anything approachingto repetitions, 
(which they may possibly do in correspondence with thowe. 



264 



THE RHYl'HM OF MOTION. 



vast cycles of elevation and subsidence tliat produce continents 
and oceans,) it is sufficiently clear that Life on the Earth has 
not progressed uniformly, but in immense undulations. 

§ 86. It is not manifest that the changes of consciousness 
are in any sense rhythmical. Yet here, too, analysis proves 
both that the mental state existing at any moment is not 
uniform, but is decomposable into rapid oscillations ; and also 
that mental states pass through longer intervals of increasing 
and decreasing intensity. 

Though while attending to any single sensation, or any 
group of related sensations constituting the consciousness oi 
an object, we seem to remain for the time in a persistent and 
homogeneous condition of mind, a careful self-examination 
shows that this apparently unbroken mental state is in truth 
traversed by a number of minor states, in which various other 
sensations and perceptions are rapidly presented and disappear. 
From the admitted fact that thinking consists in the establish- 
ment of relations, it is a necessary corollary that the main- 
tenance of consciousness in any one state to the entire exclu- 
sion of other states, would be a cessation of thought, that is, of 
consciousness. So that any seemingly continuous feeling, say 
of pressure, really consists of portions of that feeling perpetu- 
ally recurring after the momentary intrusion of other feelings 
and ideas — quick thoughts concerning the place where it is 
felt, the external object producing it, its consequences, and 
other things suggested by association. Thus there is going 
on an extremely rapid departure from, and return to, that par- 
ticular mental state which we regard as persistent. Besides 
the evidence of rhythm in consciousness which direct analysis 
thus affords, we may gather further evidence from the corre- 
lation between feeling and movement. Sensations and emotions 
expend themselves in producing muscular contractions. If a 
sensation or emotion were strictly continuous, there would be a 
continuous discharge along those motor nerves acted upon. But 
so far as experiments with artificial stimuli enable us to judge, 
a continuous discharge along the nerve leading to a muscle, 



THE RHYTHM OF MOTION. 265 

does not contract it : a broken discharge is required — a rapid 
succession of shocks. Hence muscular contraction pre- supposes 
that rhythmic state of consciousness which direct observation 
discloses. A much more conspicuous rhythm, having 

longer waves, is seen during the outflow of emotion into 
dancing, poetry, and music. The current of mental energy 
that shows itself in these modes of bodily action, is not con- 
tinuous, but falls into a succession of pulses. The measure of 
a dance is produced by the alternation of strong muscular 
contractions with weaker ones ; and, save in measures of the 
simplest order such as are found among barbarians and 
children, this alternation is compounded with longer rises and 
falls in the degree of muscular excitement. Poetry is a form of 
speech which results when the emphasis is regularly recurrent ; 
that is, when the muscular effort of pronunciation has de- 
finite periods of greater and less intensity — periods that are 
complicated with others of like nature answering to the suc- 
cessive verses. Music, in still more various ways, exemplifies 
the law. There are the recurring bars, in each of which there 
is a primary and a secondary beat. There is the alternate 
increase and decrease of muscular strain, implied, by the 
ascents and descents to the higher and lower notes — as- 
cents and descents composed of smaller waves, breaking the 
rises and falls of the larger ones, in a mode peculiar to each 
melody. And then we have, further, the alternation of piano 
and forte passages. That these several kinds of rhythm, 
characterizing aesthetic expression, are not, in the common 
sense of the word, artificial, but are intenser forms of an un- 
dulatory movement habitually generated by feeling in its 
bodily discharge, is shown by the fact that they are all trace- 
able in ordinary speech ; which in every sentence has its 
primary and secondary emphases, and its 'cadence containing 
a chief rise and fall complicated with subordinate rises 
and falls ; and which is accompanied by a more or less 
oscillatory action of the limbs when the emotion is 
great. Still longer undulations may be observed by 

every one, in himself and in others, on occasions of extreme 
13 



266 THE RHYTHM OF MOTION. 

pleasure or extreme pain. Note, in the first place, that pain 
having its origin in bodily disorder, is nearly always percep- 
tibly rhythmical. During hours in which it never actually 
ceases, it has its variations of intensity — fits or paroxysms ; and 
then after these hours of suffering there usually come hours 
of comparative ease. Moral pain has the like smaller and 
larger waves. One possessed by intense grief does not utter 
continuous moans, or shed tears with an equable rapidity ; 
but these signs of passion come in recurring bursts. Then 
after a time during which such stronger and weaker waves 
of emotion alternate, there comes a calm — a time of compara- 
tive deadness ; to which again succeeds another interval, 
when dull sorrow rises afresh into acute anguish, with its 
series of paroxysms. Similarly in great delight, especially as 
manifested by children who have its display less under control, 
there are visible variations in the intensity of feeling shown — 
fits of laughter and dancing about, separated by pauses in 
which smiles, and other slight manifestations of pleasure, 
suffice to discharge the lessened excitement. Nor are 

there wanting evidences of mental undulations greater in 
length than any of these — undulations which take weeks, or 
months, or years, to complete themselves. We continually 
hear of moods which recur at intervals. Yery many persons 
have their epochs of vivacity and depression. There are periods 
of industry following periods of idleness ; and times at which 
particular subjects or tastes are cultivated with zeal, alternat- 
ing with times at which they are neglected. Respecting 
which slow oscillations, the only qualification to be made is, 
that being affected by numerous influences, they are com- 
paratively irregular. 

§ 87. In nomadic societies the changes of place, deter 
mined as they usually are by exhaustion or failure of the 
supply of food, are periodic ; and in many cases show a 
recurrence answering to the seasons. Each tribe that has 
oecome in some degree fixed in its locality, goes on increasing, 



THE RHYTHM OF MOTION. 267 

till under the pressures of unsatisfied desires, there results 
migration of some part of it to a new region — a process repeat- 
ed at intervals. From such excesses of population, and such 
successive waves of migration, come conflicts with other 
tribes ; which are also increasing and tending to diffuse 
themselves. This antagonism, like all others, results not in an 
uniform motion, but in an intermittent one. War, exhaus- 
tion, recoil — peace, prosperity, and renewed aggression : — see 
here the alternation more or less discernible in the military 
activities of both savage and civilized nations. And irregular 
as is this rhythm, it is not more so than the different sizes 
of the societies, and the extremely involved causes of varia- 
tion in their strengths, would lead us to anticipate. 

Passing from external to internal changes, we meet with 
this backward and forward movement under many forms. In 
the currents of commerce it is especially conspicuous. 
Exchange during early times is almost wholly carried on at 
fairs, held at long intervals in the chief centres of population. 
The flux and reflux of people and commodities which each of 
these exhibits, becomes more frequent as national develop- 
ment leads to greater social activity. The more rapid rhythm 
of weekly markets begins to supersede the slow rhythm of 
fairs. And eventually the process of exchange becomes at 
certain places so active, as to bring about daily meetings of 
buyers and sellers — a daily wave of accumulation and dis- 
tribution of cotton, or corn, or capital. If from 
exchange we turn to production and consumption, we see 
undulations, much longer indeed in their periods, but almost 
equally obvious. Supply and demand are never completely 
adapted to each other ; but each of them from time to time 
in excess, leads presently to an excess of the other. Farmers 
who have one season produced wheat very abundantly, are 
disgusted with the consequent low price ; and next season, 
sowing a much smaller quantity, bring to market a deficient 
crop ; whence follows a converse effect. Consumption 
undergoes parallel undulations that need not be specified. 



2G8 THE RHYTHM OF MOTION. 

The balancing of supplies between different districts, too, 
entails analogous oscillations. A place at which some neces- 
sary of life is scarce, becomes a place to which currents of it 
are set up from other places where it is relatively abundant ; 
and these currents from all sides lead to a wave of accumula- 
tion where they meet — a glut : whence follows a recoil — a 
partial return of the currents. But the undulatory 

character of these actions is perhaps best seen in the rises and 
falls of prices. These, given in numerical measures which 
may be tabulated and reduced to diagrams, show us in the 
clearest manner how commercial movements are compounded 
of oscillations of various magnitudes. The price of consols or 
the price of wheat, as thus represented, is seen to undergo 
vast ascents and descents whose highest and lowest points are 
reached only in the course of years. These largest waves of 
variation are broken by others extending over periods of 
perhaps many months. On these again come others having 
a week or two's duration. And were the changes marked in 
greater detail, we should have the smaller undulations that 
take place each day, and the still smaller ones which brokers 
telegraph from hour to hour. The whole outline would show 
a complication like that of a vast ocean-swell, on whose sur- 
face there rise large billows, which themselves bear waves oi 
moderate size, covered by wavelets, that are roughened by a 
minute ripple. Similar diagramatic representations of births, 
marriages, and deaths, of disease, of crime, of pauperism, 
exhibit involved conflicts of rhythmical motions throughout 
society under these several aspects. 

There are like characteristics in social changes of a more 
complex kind. Both in England and among continental 
nations, the action and reaction of political progress have 
come to be generally recognized. Religion, besides its occa- 
sional revivals of smaller magnitude, has its long periods of 
exaltation and depression— generations of belief and self- mor- 
tification, following generations of indifference and laxity. 
There are poetical epochs, and epochs in which the sense of the 



THE RHYTHM OF MOTION. 2G9 

beautiful seems almost dormant. Philosophy, after having 
been awhile predominant, lapses for a long season into neglect ; 
and then again slowly revives. Each science has its eras of 
deductive reasoning, and its eras when attention is chiefly 
directed to collecting and colligating facts. And how in such 
minor but more obtrusive phenomena as those of fashion, 
there are ever going on oscillations from one extreme to the 
other,, is a trite observation. 

As may be foreseen, social rhythms well illustrate the 
irregularity that results from combination of many causes. 
Where the variations are those of one simple element in na- 
tional life, as the supply of a particular commodity, we do in- 
deed witness a return, after many involved movements, to a 
previous condition — the price may become what it was before : 
implying a like relative abundance. But where the action is 
one into which many factors enter, there is never a recur- 
rence of exactly the same state. A political reaction never 
brings round just the old form of things. The rationalism 
of the present day differs widely from the rationalism of the 
last century. And though fashion from time to time revives 
extinct types of dress, these alwa} T s re-appear with decided 
modifications. 

§ 88. The universality of this principle suggests a question 
like that raised in foregoing cases. Rhythm being manifested 
in all forms of movement, we have reason to suspect that it 
is determined by some primordial condition to action in 
general. The tacit implication is that it is deducible from 
the persistence of force. This we shall find to be the fact. 

When the prong of a tuning-fork is pulled on one side by 
the finger, a certain extra tension is produced among its co- 
hering particles ; which resist any force that draws them out 
of their state of equilibrium. As much force as the finger 
exerts in pulling the prong aside, so much opposing force is 
brought into play among the cohering particles. Hence, 
when the prong is liberated, it is urged back by a force equal 



270 THE IlIiYTIIM OF MOTION. 

to that used in deflecting it. TVhen, therefore, the prong 
reaches its original position, the force impressed on it during 
its recoil, has generated in it a corresponding amount of mo- 
mentum — an amount of momentum nearly equivalent, that 
is, to. the force originally impressed (nearly, we must say, 
because a certain portion has gone in communicating motion 
to the air, and a certain other portion has been transformed 
into heat). This momentum carries the prong beyond the 
position of rest, nearly as far as it was originally drawn in 
the reverse direction ; until at length, being gradually used 
up in producing an opposing tension among the particles, it 
is all lost. The opposing tension into which the expended 
momentum has been transformed, then generates a second re- 
coil ; and so on continually — the vibration eventually ceasing 
only because at each movement a certain amount of force 
goes ia creating atmospheric and etherial undulations. 
Now it needs but to contemplate this repeated action and re- 
action, to see that it is, like every action and reaction, a 
consequence of the persistence of force. The force exerted 
by the finger in bending the prong cannot disappear. 
Under what form then does it exist ? It exists under the 
form of that cohesive tension which it has generated among 
the particles. This cohesive tension cannot cease without an 
equivalent result. What is its equivalent result ? The 
momentum generated in the prong while being carried back 
to its position of rest. This momentum too — what becomes 
of it ? It must either continue as momentum, or produce 
some correlative force of equal amount. It cannot continue 
as momentum, since change of place is resisted by the cohe- 
sion of the parts ; and thus it gradually disappears by being- 
transformed into tension among these parts. This is re- 
transformed into the equivalent momentum ; and so on con- 
tinuously. If instead of motion that is directly anta- 
gonized by the cohesion of matter, we consider motion through 
space, the same truth presents itself under another form. 
Though here no opposing force seems at work, and therefore 



THE RHYTHM OF MOTION. 271 

no cause of rhythm is apparent, yet its own accumulated 
momentum must eventually carry the moving body beyond 
the body attracting it ; and so must become a force at vari- 
ance with that which generated it. From this conflict, 
rhythm necessarily results as in the foregoing case. The 
force embodied as momentum in a given direction, cannot be 
destroyed ; and if it eventually disappears, it re-appears in 
the reaction on the retarding body ; which begins afresh to 
draw the now arrested mass back from its aphelion. The 
only* conditions under which there could be absence of rhythm 
— the only conditions, that is, under which there could be a 
continuous motion through space in the same straight line 
for ever, would be the existence of an infinity void of every- 
thing but the moving body. And neither of these conditions 
can be represented in thought. Infinity is inconceivable ; 
and so also is a motion which never had a commencement in 
some pre-existing source of power. 

Thus, then, rhythm is a necessary characteristic of all 
motion. Given the co-existence everywhere of antagonist 
forces — a postulate which, as we have seen, is necessitated 
by the form of our experience — and rhythm is an inevitable 
corollary from the persistence of force. 



CHAPTER XL 

RECAPITULATION, CRITICISM, AND RECOMMENCEMENT. 

§ 89. Let us pause awhile to consider how far the con- 
tents of the foregoing chapters go towards forming a body 
of knowledge such as was defined at the outset as constitut- 
ing Philosophy. 

In respect of its generality, the proposition enunciated 
and exemplified in each chapter, is of the required kind — is 
a proposition transcending those class-limits which Science, 
as currently understood, recognizes. " The Indestructibility 
of Matter " is a truth not belonging to mechanics more than 
to chemistry, a truth assumed alike by molecular physics 
and the physics that deals with sensible masses, a truth 
which the astronomer and the biologist equally take for 
granted. Not merely do those divisions of Science which 
deal with the movements of celestial and terrestrial bodies 
postulate " The Continuity of Motion/' but it is no less pos- 
tulated in the physicist's investigations into the phenomena 
of light and heat, and is tacitly, if not avowedly, implied in 
the generalizations of the higher sciences. So, too, " The 
Persistence of Force,'' involved in each of the preceding 
propositions, is co-extensive with them, as is also its corollary, 
" The Persistence of Relations among Forces." These are 
not truths of a high generality, but they are universal 
truths. Passing to the deductions drawn from 

them, we see the same thing-. That force is transformable. 



RECATITUIATIONj CRITICISM, AND RECOMMENCEMENT. 273 

and that between its correlates there exist quantitative equi- 
valences, are ultimate facts not to be classed with those of me- 
chanics, or thermologVj or electricity, or magnetism; but they 
are illustrated throughout phenomena of every order, up to 
those of mind and society. Similarly, the law that motion fol. 
lows the line of least resistance or the line of greatest traction 
or the resultant of the two, we found to be an all-pervading 
law j conformed to alike by each planet in its orbit, and by 
the moving matters, aerial, liquid, and solid, on its surface 
— conformed to no less by every organic movement and 
process than by every inorganic movement and process. 
And so likewise, in the chapter just closed, it has been 
shown that rhythm is exhibited universally, from the slow 
gyrations of double stars down to the inconceivably rapid 
oscillations of molecules — from such terrestrial changes as 
these of recurrent glacial epochs and gradually alternating 
elevations and subsidences, down to those of the winds and 
tides and waves ; and is no less conspicuous in the functions 
of living organisms, from the pulsations of the heart up to 
the paroxysms of the emotions. 

Thus these truths have the character which constitutes 
them parts of Philosophy, properly so called. They are 
truths which unify concrete phenomena belonging to all 
divisions of Nature ; and so must be components of that 
complete, coherent conception of things which Philosophy 
;ceks. 

§ 90. But now what parts do these truths play in forming 
such a conception ? Does any one of them singly convey 
an idea of the Cosmos : meaning by this word the totality 
of the manifestations of the Unknowable ? Do all of them 
taken together yield us an adequate idea of this kind ? Do 
they even when thought of in combination compose any- 
thing like such an idea ? To each of these questions the 
■Eswer must be — Xo. 

Neither these truths nor any other such truths, separately 



274 EECATITULATIONj CRITICISM, AND RECOMMENCEMENT. 

or jointly, constitute that integrated knowledge in which 
only Philosophy finds its goal. It has been supposed by 
one thinker that when Science has succeeded in reducing all 
more complex laws to some most simple law, as of molecular 
action, knowledge will have reached its limit. Another 
authority has tacitly asserted that all minor facts are so 
merged in the major fact that the force everywhere in 
action is nowhere lost, that to express this is to express 
u the constitution of the universe." But either conclusion 
implies a misapprehension of the problem. 

For these are all analytical truths, and no analytical truth 
— no number of analytical truths, will make up that syn- 
thesis of thought which alone can be an interpretation of 
the synthesis of things. The decomposition of phenomena 
into their elements, is but a preparation for understanding 
phenomena in their state of composition, as actually mani- 
fested. To have ascertained the laws of the factors is not 
at all to have ascertained the laws of their co-operation. 
The question is, not how any factor, Matter or Motion or 
Force, behaves by itself, or under some imagined simple 
conditions ; nor is it even how one factor behaves under the 
complicated conditions of actual existence. The thing to 
be expressed is the joint product of the factors under all its 
various aspects. Only when we can formulate the total 
process, have we gained that knowledge of it wdiich Philo- 
sophy aspires to. A clear comprehension of this matter is 
important enough to justify some further exposition. 

§ 91. Suppose a chemist, a geologist, and a biologist, 
have given the deepest explanations furnished by their 
respective sciences, of the processes going on in a burning 
candle, in a region changed by earthquake, and in a grow- 
ing plant. To the assertion that their explanations are not 
the deepest possible, they will probably rejoin — "What 
would you have ? What remains to be said of combustion 
when light and heat and the dissipation of substance have 



RECAPITULATION, CRITICISM, AND RECOMMENCEMENT. 275 

all been traced down to the liberation of molecular motion 
as their common cause ? "When all the actions accompany- 
ing an earthquake are explained as consequent upon the 
slow loss of the Earth's internal heat, how is it possible to 
go lower ? When the influence of light on the oscillations 
of molecules has been proved to account for vegetal growth, 
what is the imaginable further rationale ? You ask for a 
synthesis. You say that knowledge does not end in the 
resolution of phenomena into the actions of certain factors, 
each conforming to ascertained laws ; but that the laws of 
the factors having been ascertained, there comes the chief 
problem — to show how from their joint action result tho 
phenomena in all their complexity. Well, do not the above 
interpretations satisfy this requirement ? Do we not, start- 
ing with the molecular motions of the elements concerned 
in combustion, build up synthetically an explanation of tho 
light, and the heat, and the produced gases, and the move- 
ments of the produced gases ? Do we not, setting out 
from the still-continued radiation of its heat, construct by 
synthesis a clear conception of the Earth's nucleus as con- 
tracting, its crust as collapsing, as becoming shaken and 
fissured and contorted and burst through by lava ? And 
is it not the same with the chemical changes and accumula- 
tion of matter in the growing plant ? " 

To all which the reply is, that the ultimate interpretation 
to be reached by Philosophy, is a universal synthesis com- 
prehending and consolidating such special syntheses. Tho 
synthetic explanations which Science gives, even up to 
the most general, are more or less independent of ono 
another. Though they may have like elements in them, 
they are not united by the likeness of their essential 
structures. Is it to be supposed that in the burning candle, 
in the quaking Earth, and in the organism that is increas- 
ing, the processes as wholes are unrelated to one another ? 
If it is admitted that each of the factors concerned always 
operates in conformity to a law, is it to be concluded that 



276 RECAPITULATION, CRITICISM, AND RECOMMENCEMENT. 

tlioir co-operation conforms to no law ? These various 
changes, artificial and natural, organic and inorganic, which 
for convenience sake we distinguish, are not from the 
highest point of view to be distinguished ; for they are all 
changes going on in the same Cosmos, and forming parts of 
one vast transformation. The play of forces is essentially 
the same in principle throughout the whole region explored 
by our intelligence ; and though, varying infinitely in their 
proportions and combinations, they work out results every- 
where more or less different, and often seeming to have no 
kinship, yet there cannot but be among these results a 
fundamental community. The question to be answered is 
— what is the common element in the histories of all con- 
crete processes ? 

§ 92. To resume, then, we have now to seek a law of 
composition of phenomena, co-extensive with those laws of 
their components set forth- in the foregoing chapters. 
Having seen that matter is indestructible, motion con- 
tinuous, and force persistent — having seen that forces are 
everywhere undergoing transformation, and that motion, al- 
ways following the line of least resistance, is invariably 
rhythmic, it remains to discover the similarly-invariable 
formula expressing the combined consequences of the actions 
thus separately formulated. 

What must be the general character of such a formula? 
It must be one that specifies the course of the changes 
undergone by both the matter and the motion. Every 
transformation implies re -arrangement of component parts; 
and a definition of it, while saying what has happened to the 
sensible or insensible portions of substance concerned, must 
also say what has happened to the movements, sensible or 
insensible, which the re-arrangement of parts implies. Fur- 
ther, unless the transformation always goes on in the same 
way and at the same rate, the formula must specify the con- 
ditions under which it commences, ceases, and is reversed. 



RECAPITULATION, CRITICISM, AND RECOMMENCEMENT. 277 

The law we seek, therefore, must be the law of the con- 
tinuous redistribution of matter and motion. Absolute rest 
and permanence do not exist. Every object, no less than 
the aggregate of all objects, undergoes from instant to 
instant some alteration of state. Gradually or quickly it is 
receiving motion or losing motion, while some or all of its 
parts are simultaneously changing their relations to one 
another. And the question to be answered is — What 
dynamic principle, true of the metamorphosis as a whole 
and in its details, expresses these ever-changing relations? 

This chapter has served its purpose if it has indicated the 
nature of the ultimate problem. The discussion on which 
we are now to enter, may fitly open with a new presentation 
of this problem, carrying with it the clear implication that a 
Philosophy, rightly so-called, can come into existence only 
by solving the problem. 



CHAPTER XII. 

EVOLUTION AND DISSOLUTION. 

§ 93. An entire history of anything must include its ap- 
pearance out of the imperceptible and its disappearance into 
the imperceptible. Be it a single object or the whole uni- 
verse, any account which, begins with it in a concrete forin, 
or leaves off with it in a concrete form, is incomplete ; since 
there remains an era of its knowable existence undescribed 
and unexplained. Admitting, or rather asserting, that 
knowledge is limited to the phenomenal, we have, by impli- 
cation, asserted that the sphere of knowledge is co-extensivo 
with the phenomenal — co- extensive with all modes of the Un- 
knowable that can affect consciousness. Hence, wherever 
we now find Being so conditioned as to act on our senses, 
there arise the questions — how came it thus conditioned ? 
and how will it cease to be thus conditioned? Unless on the 
assumption that it acquired a sensible form at the moment 
of perception, and lost its sensible form the moment after 
perception, it must have had an antecedent existence under 
this sensible form, . and will have a subsequent existence 
under this sensible form. These preceding and succeeding 
existences under sensible forms, are possible subjects of 
knowledge ; and knowledge has obviously not reached its 
limits until it has united the past, present, and future 
histories into a whole. 

The sayings and doings of daily life imply more or less 



EVOLUTION AND DISSOLUTION. 279 

such knowledge, actual or potential, of states which hare 
gone before and of states which will come after ; and, 
indeed, the greater part of our knowledge involves these 
elements. Knowing any man personally, implies having be- 
fore seen him under a shape much the same as his present 
shape ; and knowing him simply as a man, implies the in- 
ferred antecedent states of infancy, childhood, and youth, 
Though the man's future is not known specifically, it is 
known generally : the facts that he will die and that his 
body will decay, are facts which complete in outline the 
changes to be hereafter gone through by him. So with all 
the objects around. The pre-existence under concrete forms 
of the woollens, silks, and cottons we wear, we can trace 
bome distance back. "We are certain that our furniture 
consists of matter which was aggregated by trees within 
these few generations. Even of the stones composing the 
walls of the house, we are able to say that years or centuries 
ago, they formed parts of some stratum imbedded in the 
earth. Moreover, respecting the hereafter of the wearable 
fabrics, the furniture, and the walls, we can assert thus 
much, that they are all in process of decay, and in 
periods of various lengths will lose their present coherent 
shapes. This general information which all men 

gain concerning the past and future careers of surround- 
ing things, Science has extended, and continues unceas- 
ingly to extend. To the biography of the individual 
man, it adds an intra-utcrine biography beginning with him 
as a microscopic germ; and it follows out his ultimate 
changes until it finds his body resolved into the gaseous 
products of decomposition. Not stopping short at the 
sheep's back and the caterpillar's cocoon, it identifies in 
wool and silk the nitrogenous matters absorbed by the 
sheep and the caterpillar from plants. The substance 
of a plant's leaves, in common with the wood from which 
furniture is made, it again traces bade to the vegetal assi* 
milation of cases from the air and of certain minerals from 



280 EVOLUTION AND DISSOLUTION. 

tlio soil. And inquiring whence came the stratum of stone 
that was quarried to build the house, it finds that this was 
once a loose sediment deposited in an estuary or on the sea 
bottom. 

If, then, the past and the future of each object, is a 
sphere of possible knowledge ; and if intellectual progress 
consists largely, if not mainly, in widening our acquaint- 
ance with this past and this future ; it is obvious that we 
have not acquired all the information within the grasp of 
our intelligence until we can, in some way or other, express 
the whole past and the whole future of each object and the 
aggregate of objects. Usually able, as we are, to say of any 
visible tangible thing how it came to have its present shape 
and consistence ; we are fully possessed with the conviction 
that, setting out abruptly as we do with some substance 
which already had a concrete form, our history is incom- 
plete : the thing had a history preceding the state with 
which we started. Hence our Theory of Things, considered 
individually or in their totality, is confessedly imperfect so 
long as any past or future portions of their sensible exist- 
ences are unaccounted for. 

May it not be inferred that Philosophy has to formulate 
this passage from the imperceptible into* the perceptible, and 
again from the perceptible into the imperceptible ? Is it not 
clear that this general law of the redistribution of matter 
and motion, which we lately saw is required to unify tht> 
various kinds of changes, must also be one that unifies the 
successive changes which sensible existences, separately and 
together, pass through ? Only by some formula combining 
these characters can knowledge be reduced to a coherent 
whole. 

§ 94. Already in the foregoing paragraphs the outline of 
such a formula is foreshadowed. Already in recognizing the 
fact that Science, tracing back the genealogies of various 
objects, finds their components were once in diffused states, 



EVOLUTION AND DISSOLUTION. 281 

and pursuing their histories forwards, finds diffused states 
will be again assumed by them, we have recognized the fact 
that the formula must be one comprehending the two oppo- 
site processes of concentration and diffusion. And already 
in thus describing the general nature of the formula, we 
have approached a specific expression of it. The change 
from a diffused, imperceptible state, to a concentrated, per- 
ceptible state, is an integration of matter and concomitant 
dissipation of motion ; and the change from a concentrated, 
perceptible state, to a diffused, imperceptible state, is an 
absorption of motion and concomitant disintegration, of 
matter. These are truisms. Constituent parts cannot 
aggregate without losing some of their relative motion ; and 
they cannot separate without more relative motion being 
given to them. We are not concerned here with any motion 
which the components of a mass have with respect to other 
masses : wo are concerned only with the motion they have 
with respect to one another. Confining our attention to this 
internal motion, and to the matter possessing it, the axiom 
which we have to recognize is that a progressing consolida- 
tion involves a decrease of internal motion; and that in- 
crease of internal motion involves a progressing unconsoli- 
dation. 

When taken together, the two opposite processes thus 
formulated constitute the history of every sensible existence, 
under its simplest form. Loss of motion and consequent 
integration, eventually followed by gain of motion and con- 
sequent disintegration — see here a statement comprehensive 
of the entire scries of changes passed through : comprehen- 
sive in an extremely general way, as any statement which 
holds of sensible existences at large must be ; but still, 
comprehensive in the sense that all the changes gono 
through fall within it. This will probably be thought too 
sweeping an assertion ; but we shall quickly find it justified. 

§ 95. For here we have to note the further all-important 



282 EVOLUTION AND DISSOLUTION. 

fact, that every change undergone by every sensible exist- 
ence, is a change in one or other of these two opposite 
directions. Apparently an aggregate which has passed out 
of some originally discrete state into a concrete state, there- 
after remains for an indefinite period without undergoing 
farther integration, and without beginning to disintegrate. 
Bat this is untrue. All things are growing or decaying, 
accumulating matter or wearing away, integrating or disin- 
tegrating. All things are varying in their temperatures, 
contracting or expanding, integrating or disintegrating. 
Both the quantity of* matter contained in an aggregate, and 
the quantity of motion contained in it, increase or decrease; 
and increase or decrease of either is an advance towards 
greater diffusion or greater concentration. Continued losses 
or gains of substance, however slow, imply ultimate disap- 
pearance or indefinite enlargement ; and losses or gains of 
the insensible motion we call heat, will, if continued, pro- 
duce complete integration or complete disintegration. The 
sun's rays falling on a cold mass, augmenting the molecular 
motions throughout it, and causing it to occupy more space, 
are beginning a process which if carried far will disintegrate 
the mass into liquid, and if carried farther will disintegrate 
the liquid into gas ; and the diminution of bulk which a 
volume of gas undergoes as it parts with some of its mole- 
cular motion, is a diminution which, if the loss of molecular 
motion proceeds, will presently be followed by liquefaction 
and eventually by solidification. And since there is no such 
thing as an absolutely constant temperature, the necessary 
inference is that every aggregate is at every moment pro- 
gressing towards either greater concentration or greater 
diffusion. 

Not only does all change consisting in the addition or sub- 
traction of matter come under this head; and not only does 
this head include all change called thermal expansion or 
contraction; but it is also, in a general way, comprehensive 
of all change distinguished as transposition. Every internal 



EVOLUTION AND DISSOLUTION. 283 

redistribution which leaves the component molecules or 
the constituent portions of a mass differently placed with 
respect to one another, is sure to be at tho same time a 
progress towards integration or towards disintegration — is 
sure to have altered in some degree the total space occupied. 
For when the- parts have been moved relatively to one 
another, tho chances are infinity to one that their average 
distances from the common centre of the aggregate are no 
longer the same. Hence whatever be the special character 
of the redistribution — "be it that of superficial accretion or 
detachment, be it that of general expansion or contraction, 
be it that of re-arrangement, it is always an advance in 
integration or disintegration. It is always this, though it 
may at the same time be something further. 

§ 96. A general idea of these universal actions under 
their simplest aspects having been obtained, we may now 
consider them under certain relatively complex aspects. 
Changes towards greater concentration or greater diffusion, 
nearly always proceed after a manner much more involved 
than that above described. Thus far we have supposed one 
or other of the two opposite processes to go on alone — we 
have supposed an aggregate to be either losing motion and 
integrating or gaining motion and disintegrating. But 
though it is true that every change furthers one or other of 
these processes, it is not true that either process is ever 
wholly unqualified by the other. For each aggregate is at 
all times both gaining motion and losing motion. 

Every mass from a grain of sand to a planet, radiates heat 
to other masses, and absorbs heat radiated by other masses; 
and in so far as it does the one it becomes integrated, whilo 
in so far as it does the other it becomes disintegrated. 
Ordinarily in inorganic objects this double process works 
but unobtrusive effects. Only in a few cases, among which 
that of a cloud is the most familiar, does the conflict 
produce rapid and marked transformations. One of these 



231 EVOLUTION AND DISSOLUTION. 

floating bodies of vapour expands and dissipates, if the 
amount of molecular motion it receives from the Sun and 
Earth, exceeds that which it loses by radiation into space and 
towards adjacent surfaces; while, contrariwise, if, drifting 
over cold mountain tops, it radiates to them much more 
heat than it receives, the loss of molecular motion is followed 
by increasing integration of the vapour, ending in the 
aggregation of it into liquid and the fall of rain. Here, as 
elsewhere, the integration or the disintegration is a differ- 
ential result. 

In living aggregates, and more especially those classed as 
animals, these conflicting processes go on with great activity 
under several forms. There is not merely what we may call 
the passive integration of matter, that results in inanimate 
objects from simple molecular attractions ; but there is an 
active integration of it under the form of food. In addition to 
that passive superficial disintegration which inanimate ob- 
jects suffer from external agents, animals produce in them- 
selves active internal disintegration, by absorbing such 
agents into their substance. While, like inorganic aggre- 
gates, they passively give off and receive motion, they are 
also active absorbers of motion latent in food, and active ex- 
penders of that motion. But notwithstanding this compli- 
cation of the two processes, and the immense exaltation of 
the conflict between them, it remains true that there is 
always a differential progress towards either integration or 
disintegration. During the earlier part of the cycle of 
changes, the integration predominates — there goes on what 
we calrgrowth. The middle part of the cycle is usually 
characterized, not by equilibrium between the integrating 
and disintegrating processes, but by alternate excesses of 
them. And the cycle closes with a period in which the dis- 
integration, beginning to predominate, eventually puts a 
stop to integration, and undoes what integration had origi- 
nally done. At no moment are assimilation and waste so 
balanced that no increase or decrease of mass is going on. 



EVOLUTION AND DISSOLUTION. 2S5 

Even in cases where one part is growing while other parta 
are dwindling, and even in cases ay here different parts are 
differently exposed to external sources of motion so that 
some are expanding while others are contracting, the truth 
still holds. For the chances are infinity to one against 
these opposite changes balancing one another; and if they 
do not balance one another, the aggregate as a whole is 
integrating or disintegrating. 

Everywhere and to the last, therefore, the change at any 
moment going on forms a part of one or other of the two 
processes. "While the general history of every aggregate is 
definable as a change from a diffused imperceptible state to 
a concentrated perceptible state, and again to a diffused im- 
perceptible state; every detail of the history is definable as 
a part of either the one change or the other. This, then, 
must be that universal law of redistribution of matter and 
motion, which serves at once to unify the seemingly diverse 
groups of changes, as well as the entire course of each group. 

§ 97. The processes thus everywhere in antagonism, and 
everywhere gaining now a temporary and now a more or less 
permanent triumph the one over the other, we call Evolution 
and Dissolution. Evolution under its simplest and most 
general aspect is the integration of matter and concomitant 
dissipation of motion ; while Dissolution is the absorption of 
motion and concominant disintegration of matter. 

These titles are by no means all that is desirable ; or 
rather we may say that while the last answers its purpose 
tolerably well, the first is open to grave objections. Evolu- 
tion has other meanings, some of which are incongruous 
with, and some even directly opposed to, the meaning hero 
given to it. The evolution of a gas is literally an absorp- 
tion of motion and disintegration of matter, which is exactly 
the reverse of that which we here call Evolution — is that 
which we hero call Dissolution. As ordinarily understood, 
to evolve is to unfold, to open and expand, to throw out, to 



28G EVOLUTION AND DISSOLUTION. 

emit; wlicrcas as wo understand it, the act of evolving, 
though it implies increase of a concrete aggregate, and in 
so far an expansion of it, implies that its component matter 
has passed from a more diffused to a more concentrated 
state — has contracted. The antithetical word Involution 
would much more truly express the nature of the process ; 
and would, indeed, describe better the secondary characters 
of the process which we shall have to deal with presently. 
We are obliged, however, notwithstanding the liabilities to 
confusion that must result from these unlike and even con- 
tradictory meanings, to use Evolution as antithetical to Dis- 
solution. The word is now so widely recognized as signify- 
ing, not, indeed, the general process above described, but 
sundry of the most conspicuous varieties of it, and certain of 
its secondary but most remarkable accompaniments, that we 
cannot now substitute another word. All we can do is 
car ef ally to define the interpretation to be given to it. 

While, then, we shall by Dissolution everywhere mean the 
process tacitly implied by its ordinary meaning — the ab- 
sorption of motion and disintegration of matter ; we shall 
everywhere mean by Evolution, the process which is always 
an integration of matter and dissipation of motion, but 
which,, as we shall now see, is in most cases much more 
than this. 



CHAPTER XIIL 

SIMPLE AND COMPOUND EVOLUTION. 

§ 93. "Where tlie only forces at work are those directly 
tending to produce aggregation or diffusion, the whole his- 
tory of an aggregate will comprise no more than the ap- 
proaches of its components towards their common centre 
and their recessions from their common centre. The process 
of Evolution, including nothing beyond what was described 
at the outset of the last chapter, will be simple. 

Again, in cases where the forces which cause movements 
towards a common centre are greatly in excess of all other 
forces, any changes additional to those constituting aggre- 
gation will be comparatively insignificant — there will be 
integration scarcely at all modified by further kinds of re- 
distribution. 

Or if, because of the smallness of the mass to be integrated, 
or because of the little motion the mass receives from with- 
out in return for the motion it loses, the integration proceeds 
rapidly; there will similarly be wrought but insignificant 
effects on the integrating mass by incident forces, even 
though these are considerable. 

But when, conversely, the integration is but slow; either 
because the quantity of motion contained in the aggregate 
is relatively great; or because, though the quantity of 
motion which each part possesses is not relatively great, the 
large size of the aggregate prevents easy dissipation of the 
motion; or because, though motion is rapidly lost more 



288 SIMPLE AND COMPOUND EVOLUTION. 

motion is rapidly received; then, other forces will cause 
in the aggregate appreciable modifications. Along with the 
change constituting integration, there will take place sup- 
plementary changes. The Evolution, instead of being 
simple, will be compound. 

The several propositions thus briefly enunciated require 
some explanation. 

§ 99. So long as a body moves freely through space, 
every force that acts on it produces an equivalent in the 
shape of some change in its motion. No matter how high 
its velocity, the slightest lateral traction or resistance causes 
it to deviate from its line of movement — causes it to move 
towards the new source of traction or away from the new 
source of resistance, just as much as it would do had it no 
other motion. And the effect of the perturbing influence 
goes on accumulating in the ratio of the squares of the times 
during which its action continues uniform. This same body, 
however, will, if it is united in certain ways with other 
bodies, cease to be moveable by small incident forces. 
When it is held feist by gravitation or cohesion, these 
small incident forces, instead of giving it some relative 
motion through space, are otherwise dissipated. 

What here holds of masses, holds, in a qualified way, of 
the sensible parts of masses, and of molecules. As the 
sensible parts of a mass, and the molecules of a mass, are, 
by virtue of their aggregation, not perfectly free, it is not 
true of each of them, as of a body moving through space, 
that every incident force produces an equivalent change of 
position : part of the force goes in working other changes. 
But in proportion as the parts or the molecules are feebly 
bound together, incident forces effect marked re-arrange- 
ments among them. At the one extreme, where the 
integration is so slight that the parts, sensible or insensible, 
are almost independent, they are almost completely amen- 
able to every additional action; and along with the con- 



SIMPLE AND COMPOUND EVOLUTION. 289 

centration going on there go on other re-distributions. 
Contrariwise, where the parts have approached within such 
small distances that what wo call the attraction of cohesion 
is great, additional actions, unless intense, cease to have 
much power to cause secondary re-arrangeraents. The 
firmly-united parts no longer readily change their relative 
positions in obedience to small perturbing influences ; but 
each small perturbing influence usually does little or nothing 
more than temporarily modify the insensible molecular 
motions. 

How may we best express this difference in the most 
general terms ? An aggregate that is widely diffused, or but 
little integTated, is an aggregate that contains a large quantity 
of motion — actual or potential or both. An aggregate that 
has become completely integrated or dense, is one that con- 
tains comparatively little motion: most of the motion its 
parts once had has been lost during the integration that has 
rendered it dense. Hence, other things equal, in propor- 
tion to the quantity of motion which an aggregate contains 
will be the quantity of secondary change in the arrangement 
of its parts that accompanies the primary change in their 
arrangement. Hence also, other things equal, in proportion to 
the time during which the internal motion is retained, will be 
the quantity of this secondary re-distribution that accompanies 
the primary re-distribution. It matters not how these con- 
ditions are fulfilled. "Whether the internal motion continues 
great because the components are of a kind that will not 
readily aggregate, or because surrounding conditions pre- 
vent them from parting with their motion, or because the 
loss of their motion is impeded by the size of the aggregate 
they form, or because they directly or indirectly obtain 
more motion in place of that which they lose ; it through- 
out remains true that much retained internal motion must, 
render secondary re-distributions facile, and that long re- 
tention of it must make possible an accumulation of such 
secondary re-distributions. Conversely, the non-fulfilmout of 
11 



290 SIMPLE AND COMPOUND EVOLUTION. 

these conditions,, however caused, entails opposite results. 
Be it that the components of the aggregate have special 
aptitudes to integrate quickly, or be it that the smallness of 
the aggregate formed of them permits the easy escape of 
their motion, or be it that they receive little or no motion 
in exchange for that which they part with ; it alike holds 
that but little secondary re-distribution can accompany the 
primary re-distribution constituting their integration. 

These abstract propositions will not be fully understood 
without illustrations. Let us, before studying simple and 
compound Evolution as thus determined, contemplate a few 
cases in which the quantity of internal motion is artificially 
changed, and note the effects on the re-arrangement of 
parts. 

§ 100. We may fitly begin with a familiar experience, 
introducing the general principle under a rude but easily 
comprehensible form. When a vessel has been filled to the 
brim with loose fragments, shaking the vessel causes them 
to settle down into less space, so that more may be put in. 
And when among the fragments there are some of much 
greater specific gravity than the rest, these, in the course of 
a prolonged shaking, find their way to the bottom. What 
now is the meaning of such results, when expressed in 
general terms ? We have a group of units acted on by an 
incident force — the attraction of the Earth. So long as 
these units are not agitated, this incident force produces no 
changes in their relative positions; agitate them, and im- 
mediately their loose arrangement passes into a more com- 
pact arrangement. Again, so long as they are not agitated, 
the incident force cannot separate the heavier units from the 
lighter; agitate them, and immediately the heavier units 
begin to segregate. Mechanical disturbances of 

more minute kinds, acting on the parts of much denser ag- 
gregates, produce analogous effects. A piece of iron which, 
when it leaves the workshop, is fibrous in structure, be- 



SIMPLE AND COMPOUND EVOLUTION. 2°1 

comes crystalline if exposed to a perpetual jar. The polar 
forces mutually exercised by the atoms, fail to change the 
disorderly arrangement into an orderly arrangement while 
the atoms are relatively quiescent ; but these forces succeed 
in re-arranging them when the atoms are kept in a state ol 
intestine agitation. Similarly, the fact that a bar of steel 
suspended in the magnetic meridian and repeatedly struck, 
becomes magnetized, is ascribed to a re-arrangement of par- 
ticles that is produced by the magnetic force of the Earth 
when vibrations are propagated through them, but is not 
otherwise produced. Now imperfectly as these 

cases parallel the mass of those we are considering, they 
nevertheless serve roughly to illustrate the effect which 
adding to the quantity of motion an aggregate contains, has 
in facilitating re-arrangement of its parts. 

!More fully illustrative are the instances in which, by arti- 
ficially adding to or subtracting from that molecular motion 
which we call its heat, we give an aggregate increased or 
diminished facility of re-arranging its molecules. The pro- 
cess of tempering steel or annealing glass, shows us that 
internal re-distribution is aided by insensible vibrations, as 
we have just seen it to be by sensible vibrations. When 
some molten glass is dropped into water, and when its out- 
side is thus, by sudden solidification, prevented from par- 
taking in that contraction which the subsequent cooling of 
the inside tends to produce; the units are left in such a 
state of tension, that the mass flies into fragments if a small 
portion of it be broken off. But if this mass be kept for a 
day or two at a considerable heat, though a heat not suffi- 
cient to alter its form or produce any sensible diminution of 
hardness, this extreme brittleness disappears : the com- 
ponent particles being thrown into greater agitation, the 
tensile forces are enabled to re-arrange them into a state of 
equilibrium. }iuch more conspicuously do we see 

the effect of the insensible motion called heat, where the 
re-arrangement of parts taking place is that of visible scgre- 



292 SIMPLE AND COMPOUND EVOLUTION. 

gaticn. An instance is furnished by the subsidence of fine 
precipitates. These sink down very slowly from solutions 
that are cold; while warm solutions deposit them with com/ 
parative rapidity. That is to say, exalting the molecular 
oscillation throughout the mass, allows the suspended 
particles to separate more readily from the particles of 
fluid. The influence of heat on chemical changes 

is so familiar, that examples are scarcely needed. Be the 
substances concerned gaseous, liquid, or solid, it equally holds 
that their chemical unions and disunions are aided by rise 
of temperature. Affinities which do not suffice to effect the 
re-arrangement of mixed units that are in a state of feeble 
agitation, suffice to effect it when the agitation is raised to a 
certain point. And so long as this molecular motion is not 
great enough to prevent those chemical cohesions which the 
affinities tend to produce, increase of it gives increased faci- 
lity of chemical re-arrangement. 

Another class of facts may be adduced which, though not 
apparently, are really illustrative of the same general truth. 
Other things equal, the liquid form of matter implies 
greater quantity of contained motion than the solid form— 
the liquidity is itself a consequence of such greater quantity. 
Hence, an aggregate made up partly of liquid matter and 
partly of solid matter, contains a greater quantity of motion 
than one which, otherwise like it, is made up wholly of 
solid matter. It is inferable, then, that a liquid-solid 
aggregate, or, as we commonly call it, a plastic aggregate, 
will admit of internal redistribution with comparative faci- 
lity ; and the inference is verified by experience. A magma 
of unlike substances ground up with water, while it con- 
tinues thin allows a settlement of its heavier components — a 
separation of them from the lighter. As the water evapo- 
rates this separation is impeded, and ceases when the 
magma becomes very thick. But even when it has reached 
the semi-solid state in which gravitation fails to cause 
further segregation of its mixed components, other forces 



BIMELE AND COMPOUND EVOLUTION. 



293 



may still continue to produce segregation : witness tlie fact 
to which attention was first drawn by Mr. Babbage, that 
when the pasty mixture of ground flints and kaolin, pre- 
pared for tho manufacture of porcelain, is kept some time, 
it becomes gritty and unfit for use, in consequence of the 
particles of silica separating themselves from the rest, and 
uniting together in grains; or witness the fact known to 
every housewife, that in long-kept currant-jelly the sugar 
takes the shape of imbedded crystals. 

No matter then under what form the motion contained by 
an aggregate exists — be it mere mechanical agitation, or the 
mechanical vibrations such as produce sound, be it mole- 
cular motion absorbed from without, or the constitutional 
molecular motion of some component liquid, the same truth 
holds throughout. Incident forces work secondary re-distri- 
butions easily when the contained motion is large in quan- 
tity; and work them with increasing difficulty as the con- 
tained motion diminishes. 

§ 101. Yet another class of facts that fall within the 
same generalization, little as they seem related to it, must 
be indicated before proceeding. They are those presented 
by certain contrasts in chemical stability. Speaking gene- 
rally, stable compounds contain comparatively little mole- 
cular motion ; and in proportion as the contained molecular 
motion is great the instability is great. 

The common and marked illustration of this to bo first 
named, is that chemical stability decreases as temperature 
increases. Compounds of which the elements are strongly 
united and compounds of which the elements are feebly 
united, are alike in this, that raising their heats or increasing 
the quantities of their contained molecular motion, dimi- 
nishes the strengths of the unions of their elements ; and by 
continually adding to the quantity of contained molecular 
motion, a point is in each case reached at which the 
chemical union is destroyed. That is to say, the rc-distribu- 



294 SIMPLE AND COMPOUND EVOLUTION. 

tion of matter which constitutes simple chemical decompo- 
sition, is easy in proportion as the quantity of contained 
motion is great. The like holds with double de- 

compositions. Two compounds, A B and C D, mingled 
together and kept at a low temperature, may severally 
remain unchanged — the cross affinities between their com- 
ponents may fail to cause re-distribution. Increase the heat 
of the mixture, or add to the molecular motion throughout 
it, and re-distribution takes place ; ending in the formation 
of the compounds, A C and B D. 

Another chemical truth having a like implication, is 
that chemical elements which, as they ordinarily exist, 
contain much motion, have combinations less stable than 
those of which the elements, as they ordinarily exist, contain 
little motion. The gaseous form of matter implies a rela- 
tively large amount of molecular motion; while the solid 
form implies a relatively small amount of molecular motion. 
What are the characters of their respective compounds? 
The compounds which the permanent gases form with on© 
another, cannot resist high temperatures : most of them are 
easily decomposed by heat; and at a red heat, even the 
stronger ones yield up their components. On the other 
hand, the chemical unions between elements that are solid 
except at very high temperatures, are extremely stable. In 
many, if not indeed in most, cases, such combined elements 
are not separable by any heat we can produce. 

There is, again, the relation, which appears to have a 
kindred meaning, between instability and amount of com- 
position. " In general, the molecular heat of a compound 
increases with the degree of complexity." With increase of 
complexity there also goes increased facility of decomposi- 
tion. Whence it follows that molecules which contain 
much motion in virtue of their complexity, are those of 
which the components are most readily re-distributed. This 
holds not only of the complexity resulting from the union of 
several unlike elements ; but it holds also of the complexity 



SIMPLE AND COMPOUND EVOLUTION. 205 

resulting from the union of the same elements in higher 
multiples. Matter has two solid states, distinguished as 
crystalloid and colloid ; of which the first is due to union of 
the individual atoms or molecules, and the second to the 
union of groups of such individual atoms or molecules ; and 
of which the first is stable and the second unstable. 

But the most striking and conclusive illustration is fur- 
nished by the combinations into which nitrogen enters. 
These have the two characters of being specially unstable 
and of containing specially great quantities of motion. A 
recently-ascertained peculiarity of nitrogen, is, that instead 
of giving out heat when it combines with other elements, it 
absorbs heat. That is to say, besides carrying with it into 
the liquid or solid compound it forms, the motion which 
previously constituted it a gas, it takes up additional 
motion : and where the other element with which it unites 
is gaseous, the molecular motion proper to this, also, is 
locked up in the compound. Now these nitrogen-com- 
pounds are unusually prone to decomposition ; and the de- 
compositions of many of them take place with extreme 
violence. All our explosive substances are nitrogenous — 
the most terribly destructive of them all, chloride of nitro- 
gen, being one which contains the immense quantity of 
motion proper to its component gases, plus a certain further 
quantity of motion. 

Clearly these general chemical truths, are parts of the 
more general physical truth we are tracing out. We see 
in them that what holds of sensible aggregates, holds also 
of the insensible aggregates we call molecules. Like the 
aggregates formed of them, these ultimate aggregates be- 
come more or less integrated according as they lose or gain 
motion ; and like them also, according as they contain much 
or little motion, they are liable to undergo secondary re-dis- 
tributions of parts along with the primary re-distribution. 

§ 102. And now having got this general principle clearly 



296 SIMPLE AND COMPOUND EVOLUTION. 

into view, let us go on to observe how, in conformity with 
it, Evolution becomes, according to the conditions, either 
simple or compound. 

If a little sal-ammoniac, or other volatile solid, be heated, 
it; is disintegrated by the absorbed molecular motion, and 
rises in gas. When the gas so produced, coming in con- 
tact with a cold surface, loses its excess of molecular motion, 
integration takes place — the substance assumes the form of 
crystals. This is a case of simple evolution. The process 
of concentration of matter and dissipation of motion does 
not here proceed in a gradual manner — does not pass 
through stages occupying considerable periods; but the 
molecular motion which reduced it to the gaseous state 
being dissipated, the matter passes suddenly to a com- 
pletely solid state. The result is that along with this 
primary re-distribution there go on no appreciable secondary 
re-distributions. Substantially the same thing holds with 
crystals deposited from solutions. Loss of that molecular 
motion which, down to a certain point, keeps the molecules 
from uniting, and sudden solidification when the loss goes 
below that point, occur here as before ; and here as before, 
the absence of a period during which the molecules are 
partially free and gradually losing their freedom, is accom- 
panied by the absence of supplementary re-arrangements. 

Mark, conversely, what happens when the concentration 
is slow. A gaseous mass losing its heat, and undergoing a 
consequent decrease of bulk, is not subject only to this 
change which brings its parts nearer to their common 
centre, but also to many simultaneous changes. The great 
quantity of molecular motion contained in it, giving, as we 
have seen that it must, great molecular mobility, renders 
every part sensitive to every incident force ; and, as a result^ 
its parts have various motions besides that implied by their 
progressing integration. Indeed these secondary motions 
which we know as currents, are so important and conspicuous 
as quite to subordinate the primary motion. Sup- 



6IMFLE AND COMPOUND EVOLUTION. 297 

pose that presently, trie loss of molecular motion lias reached 
that point at which the gaseous state can no longer be 
maintained, and condensation follows. Under their more 
closely-united form, the parts of the aggregate display, 
to a considerable degree, the same phenomena as before. 
The molecular motion and accompanying molecular mobility 
implied by the liquid state, permit easy re-arrangement; 
and hence, along with further contraction of volume, con- 
sequent on further loss of motion, there go on rapid and 
marked changes in the relative positions of parts — local 
streams produced by slight disturbing forces. But 

now, assuming the substance to be formed of molecules that 
have not those peculiarities leading to the sudden inte- 
gration which we call crystallization, what happens as the 
molecular motion further decreases ? The liquid thickens 
— its parts cease to be relatively moveable among one 
another with ease ; and the transpositions caused by feeble 
incident forces become comparatively slow. Little by little 
the currents are stopped, but the mass still continues modi- 
fiable by stronger incident forces. Gravitation makes it 
bend or spread out when not supported on all sides ; and it 
may easily be indented. As it cools, however, it continues 
to grow stiffer as we say — less capable of .having its parts 
changed in their relative positions. And eventually, 
further loss of heat rendering it quite hard, its parts are 
no longer appreciably re-arrangeable by any save violent 
actions. 

Among inorganic aggregates, then, secondary re-distribu- 
tions accompany the primary re-distribution, throughout the 
whole process of concentration, where this is gradual. 
During the gaseous and liquid stages, the secondary re-dis- 
tributions, rapid and extensive as they are, leave no traces— 
the molecular mobility being such as to negative the fixed 
arrangement of parts we call structure. On approaching 
solidity we arrive at a condition called plastic, in which re- 
distributions can still be made, though much less easily; 



293 smrLE and compound evolution. 

and in which, being changeable less easily, they have a 
certain persistence — a persistence which can, however, be- 
come decided, only where farther solidification stops farther 
re-distribution. 

Here we see, in the first place, what are the conditions 
under which Evolution instead of being simple becomes 
compound, while we see, in the second place, how the com- 
pounding of it can be carried far only under conditions 
more special than any hitherto contemplated ; since, on the 
one hand, a large amount of secondary re-distribution is pos- 
sible only where there is a great quantity of contained 
motion, and, on the other hand, these re-distributions can 
have permanence only where the contained motion has be- 
come small — opposing conditions which seem to negative 
any large amount of permanent secondary re-distribution. 

§ 103. And now we are in a position to observe how these 
apparently contradictory conditions are reconciled; and 
how, by the reconciliation of them, permanent secondary re- 
distributions immense in extent are made possible. We 
shall appreciate the distinctive peculiarity of the aggregates 
classed as organic, in which Evolution becomes so highly 
compounded ; and shall see that this peculiarity consists in 
the combination of matter into a form embodying an enor- 
mous amount of motion at the same time that it has a great 
degree of concentration. 

Eor notwithstanding its semi-solid consistence, organic 
matter contains molecular motion locked up in each of the 
ways above contemplated separately. Let us note its several 
constitutional traits. Three out of its four chief 

components arc gaseous ; and in their uncombined states the 
gases united in it have so much molecular motion that they 
are incondensible. Hence as the characters of elements, 
though disguised, cannot be absolutely lost in combinations, 
it is to be inferred that the protein-molecule concentrates a 
comparatively large amount of motion in a small space. 



SIMrLE AND COMPOUND EVOLUTION. 299 

And since many equivalents of these gaseous elements unite 
in one of these protein-molecules,, there must be in it a large 
quantity of relative motion in addition to that which the 
ultimate atoms possess. Moreover, organic matter 

has the peculiarity that its molecules are aggregated 
into the colloid and not into the crystalloid arrangement ; 
forming, as is supposed, clusters of clusters which have 
movements in relation to one another. Here, then, 
is a further mode in which molecular motion is in- 
cluded. Yet again, these compounds of which 
the essential parts of organisms are built, are nitro- 
genous ; and we have lately seen it to be a peculiarity of 
nitrogenous compounds, that instead of giving out heat 
during their formation they absorb heat. To all the mole- 
cular motion possessed by gaseous nitrogen, is added more 
motion ; and the whole is concentrated in solid pro- 
tein. Organic aggregates are very generally dis- 
tinguished, too, by having much insensible motion in a 
free state — the motion we call heat. Though in many cases 
the quantity of this contained insensible motion is incon- 
siderable, in other cases a temperature greatly above that 
of the environment is constantly maintained. Once 
more, there is the still larger quantity of motion embodied by 
the water that permeates organic matter. It is this which, 
giving to the water its high molecular mobility, gives 
mobility to the organic molecules partially suspended in it ; 
and preserves that plastic condition which so greatly facili- 
tates re-distribution. 

From these several statements, no adequate idea can bo 
formed of the extent to which living organic substance is 
thus distinguished from other substances having like sen- 
sible forms of aggregation. But some approximation to such 
an idea may be obtained by contrasting the bulk occupied 
by this substance, with the bulk which its constituents would 
occupy if uncombined. An accurate comparison cannot be 
made in the present state of science. What expansion would 



300 SIMPLE AND COMPOUND EVOLUTION. 

occur if the constituents of the nitrogenous compounds could 
be divorced without the addition of motion from without, is 
too complex a question to be answered. But respecting 
the constituents of that which forms some four-fifths of the 
total weight of an ordinary animal— its water — a tolerably- 
definite answer can be given. Were the oxygen and hydro- 
gen of water to lose their affinities, and were no molecular 
motion supplied to them beyond that contained in water 
at blood-heat, they would assume a volume twenty times that 
of the water.* Whether protein under like conditions would 
expand in a greater or a less degree, must remain an open 
question ; but remembering the gaseous nature of three out 
of its four chief components, remembering the above- 
named peculiarity of nitrogenous compounds, remembering 
the high multiples and the colloidal form, we may con- 
clude that the expansion would be great. We shall not 
be far wrong, therefore, in saying that the elements of the 
human body if suddenly disengaged from one another, 
would occupy a score times the space they do : the move- 
ments of their atoms would compel this wide diffusion. 
Thus the essential characteristic of living organic matter, 
is that it unites this large quantity of contained motion with 
a degree of cohesion that permits temporary fixity of ar- 
rangement. 

§ 104. Further proofs that the secondary re- distributions 
which make Evolution compound, depend for their possibility 
on the reconciliation of these conflicting conditions, are 
yielded by comparisons of organic aggregates with one 
another. Besides seeing that organic aggregates differ from 
other aggregates, alike in the quantity of motion they con- 
tain and the amount of re-arrangement of parts that accom- . 
panics their progressive integration; we shall see that among 



* I am indebted for this result to Dr. Frankland, who has been good enough 
to have the calculation made for me.- 



SIMPLE AND COMPOUND EVOLUTION. 301 

organic aggregates themselves, differences in the quantities 
of contained motion are accompanied by differences in the 
amounts of re-distribution. 

The contrasts among organisms in chemical composition 
yield us the first illustration. Animals are distinguished 
from plants by their far greater amounts of structure, as well 
as by the far greater rapidity with which changes of struc- 
ture go on in them; and in comparison with plants, animals 
are at the same time conspicuous for containing immensely 
larger proportions of those highly- compounded nitrogenous 
molecules in which so much motion is locked up. So, too, is 
it with the contrasts between the different parts of each 
animal. Though certain nitrogenous parts, as cartilage, are 
inert, yet the parts in which the secondary re-distributions 
have gone on, and are ever going on, most actively, are thoso 
in which the most highly-compounded molecules pre- 
dominate; and parts which, like the deposits of fat, consist 
of relatively-simple molecules, are seats of but little structure 
and but little change. 

We find clear proof, too, that the continuance of the se- 
condary re-distributions by which organic aggregates are so 
remarkably distinguished, depends on the presence of that 
motion contained in the water diffused through them; 
and that, other things equal, there is a direct relation be- 
tween the amount of re-distribution and the amount of 
contained water. The evidences may be put in three 
groups. There is the familiar fact that a plant has 

its formative changes arrested by cutting off the supply of 
water: the primary re-distribution continues — it withers and 
shrinks or becomes more integrated — but the secondary re- 
distributions cease. There is the less familiar, but no less 
certain, fact, that the like result occurs in animals — occurs, 
indeed, as might be expected, after a relatively smaller di- 
munition of water. Certain of the lower animals furnish ad- 
ditional proofs. The Botifera may be rendered apparently 
lifeless by desiccation, and will yet revive if wetted. When 



#02 SIMPLE AND COMPOUND EVOLUTION. 

tlio African rivers which it inhabits are dried up, tlie Lcpido* 
siren remains torpid in the hardened mud, until the return 
of the rainy season brings water. Humboldt states that 
during the summer drought, the alligators of the Pampas 
lie buried in a state of suspended animation beneath the 
parched surface, and struggle up out of the earth as soon as 
it becomes humid. The history of each organism 

teaches us the same thing. The young plant, just putting 
its head above the soil, is far more succulent than the adult 
plant; and the amount of transformation going on in it is 
relatively much greater. In that portion of an egg which 
displays the formative processes during the early stages of 
incubation, the changes of arrangement are more rapid than 
those which an equal portion of the body of a hatched chick 
undergoes. As may be inferred from their respective powers 
to acquire habits and aptitudes, the structural modifiability 
of a child is greater than that of an adult man; and the 
structural modifiability of an adult man is greater than that 
of an old man: contrasts which are accompanied by corre- 
sponding contrasts in the densities of the tissues; since the 
ratio of water to solid matter diminishes with advancing 
age. And then we have this relation repeated in 

the contrasts between parts of the same organism. In a 
tree, rapid structural changes go on at the ends of shoots, 
where the ratio of water to solid matter is very great; whilo 
the changes are very slow in the dense and almost dry sub- 
stance of the trunk. Similarly in animals, we have the con- 
trast between the high rate of change going on in a soft 
tissue like the brain, and the low rate of change going on 
in dry non- vascular tissues, such as those which form hairs, 
nails, horns, &c. 

Other groups of facts prove, in an equally unmistake- 
able way, that the quantity of secondary re-distribution in an 
organism varies, cccteris paribus, according to the contained 
quantity of the motion we call heat. The contrasts between 
different organisms, and different states of the same organism, 



SIMPLE AND COMrOUND EVOLUTION. SOS 

unite in showing this. Speaking generally, the 

amounts of structure and rates of structural change, are 
smaller throughout the vegetal kingdom than throughout 
the animal kingdom; and, speaking generally, the heat of 
plants is less than the heat of animals. A comparison of the 
several divisions of the animal kingdom with one another, dis- 
closes among them parallel relations. Regarded as a whole, 
vertebrate animals are higher in temperature than inverte- 
brate ones; and they are as a whole higher in organic ac- 
tivity and complexity. Between subdivisions of the ver- 
tebrata themselves, like differences in the state of molecular 
vibration, accompany like differences in the degree of evo- 
lution. The least compounded of the Vcrtebrata are the 
fishes; and in most cases, the heat of fishes is nearly the same 
as that of the water in which they swim : only some of them 
being decidedly warmer. Though we habitually speak of 
reptiles as cold-blooded; and though they have not much 
more power than fishes of maintaining a temperature above 
that of their medium; yet since their medium (which is, in 
the majority of cases, the air of warm climates) is on the 
average warmer than the medium inhabited by fishes, the 
temperature of the class of reptiles is higher than that of the 
class of fishes; and we see in them a correspondingly higher 
complexity. The much more active molecular agitation in 
mammals and birds, is associated with a considerably greater 
multiformity of structure and a very far greater vi- 
vacity. The most instructive contrasts, however, 
are those occurring in the same organic aggregates at 
different temperatures. Plants exhibit structural changes 
that vary in rate as the temperature varies. Though light 
is the agent which effects those molecular changes causing 
vegetal growth, yet we see that in the absence of heat, such 
changes are not effected: in winter there is enough light, 
but the heat being insufficient, plant-life is suspended. That 
this is the solo cause of the suspension, is proved by the fact 
that at the same season, plants contained in' hot-houses, 



304 SIMPLE AND COHrOUND EVOLUTION. 

where tliey receive even a smaller amount of light, go ou 
producing leaves and flowers. We see, too, that their 
seeds, to which light is not simply needless but detrimental, 
begin to germinate only when the return of a warm season 
raises the rate of molecular agitation. In like manner the 
ova of animals, undergoing those changes by which struc- 
ture is produced in them, must be kept more or less warm: 
in the absence of a certain amount of motion among their 
molecules, the re-arrangement of parts does not go on. Hy- 
bernating animals also supply proof that loss of heat carried 
far, retards extremely the processes of transformation. In 
animals which do not hybernate, as in man, prolonged ex- 
posure to intense cold produces an irresistible tendency to 
sleep (which implies a lowered rate of structural and func- 
tional changes) ; and if the abstraction of heat continues, 
this sleep ends in death, or stoppage of these changes. 

Here, then, is an accumulation of proofs, general and 
special. Living aggregates are distinguished by the con- 
nected facts, that during integration they undergo very 
remarkable secondary changes which other aggregates do 
not undergo to any considerable extent ; and that they 
contain (bulks being supposed equal) immensely greater 
quantities of motion, locked up in various ways. 

§ 105. The last chapter closed with the remark that 
while Evolution is always an integration of Matter and dis- 
sipation of Motion, it is in most cases much more. And 
this chapter opened by briefly specifying the conditions 
under which Evolution is integrative only, or remains 
simple, and the conditions under which it is something 
farther than integrative, or becomes compound. In illus- 
trating this contrast between simple and compound Evolu- 
tion, and in explaining how the contrast arises, a vaguo 
idea of Evolution in general has been conveyed. Unavoid- 
ably, we have to some extent forestalled the full discussion 
of Evolution about to be commenced. 



SI1IPLE AND COMPOUND EVOLUTION. 305 

There is nothing in tliis to regret. A preliminary con- 
ception, indefinite bnt comprehensive, is always useful as an 
introduction to a complete conception — cannot, indeed, be 
dispensed with. A complex idea is not communicable 
directly, by giving one after another its component parts 
in their finished forms; since if no outline pre-exists in 
the mind of the recipient, these component parts will not 
be rightly combined. The intended combination can be 
made only when the recipient has discovered for himself 
how ihe components are to be arranged. Much labour has 
to be gone through which would have been saved had a 
general notion, however cloudy, been conveyed before the 
distinct and detailed delineation was commenced. 

That which the reader has incidentally gathered respect- 
ing the nature of Evolution from the foregoing sections, he 
may thus advantageously use as a rude sketch, enabling him 
to seize the relations among the several parts of the enlarged 
picture as they are worked out before him. He will con- 
stantly bear in mind that the total history of every sensible 
existence is included in its Evolution and Dissolution; 
which last process we leave for the present out of considera- 
tion. He will remember that whatever aspect of it we are 
for the moment considering, Evolution is always to be re- 
garded as fundamentally an integration of Matter and dis- 
sipation of Motion, which may be, and usually is, accom- 
panied incidentally by other transformations of Matter and 
Motion. And he will everywhere expect to find that the 
primary re-distribution ends in forming aggregates which 
are simple where it is rapid, but which become compound in 
proportion as its slowness allows the effects of secondary 
re-distributions to accumulate. 

§ 10G. There is much difficulty in tracing out trans- 
formations so vast, so varied, and so intricate as those 
now to be entered upon. Besides having to deal with 
concrete phenomena of all orders, we have to deal with 



306 SIMPLE AND COM.OUND EVOLUTION. 

each group of phenomena under several aspects, no one 
of which can be fully understood apart from the rest and no 
one of which can be studied simultaneously with the rest. 
Already we have seen that during Evolution two great 
classes of changes are going on together ; and we shall pre- 
sently see that the second of these great classes is re-divi- 
sible. Entangled with one another as all these changes 
are, explanation of any one class or order involves direct or 
indirect reference to others not yet explained. We have 
nothing for it but to make the best practicable compromise. 

It will be most convenient to devote the next chapter to 
a detailed account of Evolution under its primary aspect ; 
tacitly recognizing its secondary aspects only so far as the 
exposition necessitates. 

The succeeding two chapters, occupied exclusively with 
the secondary re-distributions, will make no reference to the 
primary re- distribution beyond that which is unavoidable : 
each being also limited to one particular trait of the se- 
condary re-distributions. 

In a further chapter will be treated a third, and still more 
distinct, character of the secondary re-distributions. 



CHAPTER XIV. 

THE LAW OF EVOLUTION. 

§ 107. Deduction lias now to be verified by induction. 
Thus far the argument has been that all sensible existences 
must, in some way or other and at some time or other, reach 
their concrete shapes through processes of concentration; 
and such facts as have been named have been named merely 
to clarify the perception of this necessity. But we cannot 
be said to have arrived at that unified knowledge consti- 
tuting Philosophy, until we have seen how existences of all 
orders do exhibit a progressive integration of Matter and 
concomitant loss of Motion. Tracing, so far as we may by 
observation and inference, the objects dealt with by the 
Astronomer and the Geologist, as well as those which Bio- 
logy, Psychology and Sociology treat of, we have to con- 
sider what direct proof there is that the Cosmos, in general 
and in detail, conforms to this law. 

In doing this, manifestations of the law more involved 
than those hitherto indicated, will chiefly occupy us. 
Throughout the classes of facts successively contemplated, 
our attention will be directed not so much to the truth that 
every aggregate has undergone, or is undergoing, inte- 
gration, as to the farther truth that in every more or less 
separate part of every aggregate, integration has been, 
or is, in progress. Instead of simple wholes and wholc3 
of which the complexity has been ignored, we have 



808 THE LAW OP EVOLUTION. 

here to deal with, wholes as they actually exist— mostly 
made up of many members combined in many ways. And 
in them we shall have to trace the transformation as dis- 
played under several forms — a passage of the total mass 
from a more diffused to a more consolidated state; a con- 
current similar passage in every portion of it that comes to 
have a distinguishable individuality; and a simultaneous 
increase of combination among such individuated portions. 

§ 108. Our Sidereal System by its general form, by its 
clusters of stars of all degrees of closeness, and by its 
nebulas in all stages of condensation, gives us grounds to 
suspect that, generally and locally, concentration is goiug 
on. Assume that its matter has been, and still is being, 
drawn together by gravitation, and we have an explanation 
of all its leading traits of structure — from its solidified 
masses up to its collections of attenuated flocculi barely 
discernible by the most powerful telescopes, from its double 
stars up to such complex aggregates as the nubecula?. 
Without dwelling on this evidence, however, let us pass to 
the case of the Solar System. 

The belief, for which there are so many reasons, that this 
has had a nebular genesis, is the belief that it has arisen by 
the integration of matter and concomitant loss of motion. 
Evolution, under its primary aspect, is illustrated most 
simply and clearly by this passage of the Solar System from 
a widely diffused incoherent state to a consolidated coherent 
state. While, according to the nebular hypothesis, 

there has been going on this gradual concentration of the 
Solar System as an aggregate, there has been a simulta- 
neous concentration of each partially-independent member. 
The substance of every planet in passing through its stages 
of nebulous ring, gaseous spheroid, liquid spheroid, and 
spheroid externally solidified, has in essentials paralleled the 
changes gone through by the general mass; and every 
satellite has done the like. Moreover, at the same* 



THE LAW OP EVOLUTION. 309 

time that the matter of the whole, as well as the matter of 
each partially-independent part, has been thus integrating, 
there has been the further integration implied by increas- 
ing combination among the parts. The satellites of each 
planet are linked with their primary into a balanced cluster; 
while the planets and their satellites form with the Sun, a 
compound group of which the members are more strongly 
bound up with one another than were the far-spread por- 
tions of the nebulous medium out of which they arose. 

Even apart from the nebular hypothesis, the Solar System 
furnishes evidence having a like general meaning. Not to 
make much of the meteoric matter perpetually being added 
to the mass of the Earth, and probably to the masses of 
other planets, as well as, in larger quantities, to the mass of 
the Sun, it will suffice to name two generally-admitted 
instances. The one is the appreciable retardation of comets 
by the ethereal medium, and the inferred retardation of 
planets — a process which, in time, must bring comets, and 
eventually planets, into the Sun. The other is the Sun's 
still-continued loss of motion in the shape of radiated heat ; 
accompanying the still-continued integration of his mass. 

§ 109. To geologic evolution we pass without break from 
the evolution which, for convenience, we separate as astro- 
nomic. The history of the Earth, as traced out from the 
structure of its crust, carries us back to that molten state 
which the nebular hypothesis implies; and, as before pointed 
out (§ 69), the changes classed as igneous are the accom- 
paniments of the progressing consolidation of the Earth's 
substance and accompanying loss of its contained motion. 
Both the general and the local effects may be briefly exem- 
plified. 

Leaving behind the period when the more volatile 
elements now existing as solids were kept by the high 
temperature in a gaseous form, we may begin with the fact 
that until the Earth's surface had cooled down below 212°, 



310 THE LAW OF EVOLUTION. 

the vast mass of water at present covering three-fifths of it, 
must have existed as vapour. This enormous volume of 
disintegrated liquid became integrated as fast as the dissi- 
pation of the Earth's contained motion allowed ; leaving, at 
length, a comparatively small portion unintegrated, which 
would be far smaller but for the unceasing absorption of 
molecular motion from the Sun. In the formation 

of the Earth's crust we have a similar change similarly 
caused. The passage from a thin solid film, everywhere 
fissured and moveable on the subjacent molten matter, to a 
crust so thick and strong as to be but now and then very 
slightly dislocated by disturbing forces, illustrates the pro- 
cess. And while, in this superficial solidification, wf> see 
under one form how concentration accompanies loss of con- 
tained motion, we see it under another form in that 
diminution of the Earth's bulk implied by superficial 
corrugation. 

Local or secondary integrations have advanced along 
with this general integration. A molten spheroid merely 
skinned over with solid matter, could have presented nothing 
beyond small patches of land and water. Differences of 
elevation great enough to form islands of considerable size, 
imply a crust of some rigidity ; and only as the crust grew 
thick could the land be united into continents divided by 
oceans. So, too, with the more striking elevations. The 
collapse of a thin crust round its cooling and contracting 
contents, would throw it into low ridges : it must have 
acquired a relatively great depth and strength before ex- 
tensive mountain systems of vast elevation becamn pos- 
sible. In sedimentary changes, also, a like pro- 
gress is inferable. Denudation acting on the small surfaces 
exposed during early stages, would produce but small local 
deposits. The collection of detritus into strata of great 
extent, and the union of such strata into extensive 
" systems," imply wide surfaces of land and water, as well 
as subsidences great, in both area and depth; whence it 



1HE LAW OP EVOLUTION. 311 

follows that integrations of tliis order must have grown 
more pronounced as the Earth's crust thickened. 

§ 110. Already we have recognized the fact that 
organic evolution is primarily the formation of an aggre- 
gate, by the continued incorporation of matter previously 
spread through a wider space. Merely reminding the 
reader that every plant grows by concentrating in itself 
elements that were before diffused as gases,, and that every 
animal grows by re-concentrating these elements previously 
dispersed in surrounding plants and animals ; it will be 
here proper to complete the conception by pointing out that 
the early history of a plant or animal, still more clearly than 
its later history, shows us this fundamental process. For the 
microscopic germ of each organism undergoes, for a long 
time, no other change than that implied by absorption of 
nutriment. Cells imbedded in the stroma of an ovarium, 
become ova by little else than continued growth at the 
expense of adjacent materials. And when, after fertilization, 
a more active evolution commences, its most conspicuous 
trait is the drawing-in, to a germinal centre, of the substance 
which the ovum contains. 

Here, however, our attention must be directed mainly to 
the secondary integrations which habitually accompany the 
primary integration. We have to observe how, along with 
the formation of a larger mass of matter, there goes on a 
drawing together and consolidation of the matter into 
parts, as well as an increasingly-intimate combination of 
parts. In the mammalian embryo, the heart, at 

first a long pulsating blood-vessel, by and by twists upon itself 
and integrates. The bile-cells constituting the rudimentary 
liver, do not simply become different from the wall of the 
intestine in which they at first lie ; but, as they accumulate, 
they simultaneously diverge from it and consolidate into ar 
organ. The anterior segments of the cerebro-spinal axis, 
which are at first continuous with the rest, and distinguished 



312 TEE LAW OP EVOLUTION. 

only by tlieir larger size, undergo a gradual union ; and at 
the same time the resulting head folds into a mass clearly 
marked off from the rest of the vertebral column. The like 
process, variously exemplified in other organs, is meanwhile 
exhibited by the body as a whole ; which becomes integrated 
somewhat in the same way that an outspread handkerchief 
and its contents become integrated when its edges are drawn 
in and fastened to make a bundle. Analogous 

changes go on long after birth, and continue even up to 
old age. In man, that solidification of the bony frame- 
work which, during childhood, is seen in the coales- 
cence of portions of the same bone ossified from diffe- 
rent centres, is afterwards seen in the coalescence of bones 
that were originally distinct. The appendages of the 
vertebrae unite with the vertebral centres to which they be- 
long — a change not completed until towards thirty. At the 
same time the epiphyses, formed separately from the main 
bodies of their respective bones, have their cartilaginous 
connexions turned into osseous ones — are fused to the masses 
beneath them. The component vertebras of the sacrum, 
which remain separate till about the sixteenth year, then 
begin to unite ; and in ten or a dozen years more their union 
is complete. Still later occurs the coalescence of the coccy- 
geal vertebrae ; and there are some other bony unions which 
remain unfinished unless advanced age is reached. To 
which add that the increase of density and toughness, going 
on throughout the tissues in general during life, is the for- 
mation of a more highly integrated substance. 

The species of change thus illustrated under several 
aspects in the unfolding human body, may be traced in all 
animals. That mode of it which consists in the union of 
similar parts originally separate, has been described by 
Milne-Edwards and others, as exhibited in various of the 
Invert ebrata ; though it does not seem to have been in- 
cluded by them as an essential peculiarity in the process of 
organic development. We shall, however, see clearly that 



THE LAW OP EVOLUTION. 313 

local integration is an all-important part of this process, 
when we find it disp^cd not only in the successive stages 
passed through by every embryo,, but also in ascending from 
the lower creatures to the higher. As manifested in either 
way, it goes on both longitudinally and transversely : under 
which different forms we may, indeed, most conveniently 
consider it. Of longitudinal integration, the 

sub-kingdom Annulosa supplies abundant examples. Its 
lower members, such as worms and myriapods, are mostly 
characterized by the great number of segments composing 
them ; reaching in some cases to several hundreds. But in 
the higher divisions — crustaceans, insects, and spiders — we 
find this number reduced down to twenty-two, thirteen, or 
even fewer ; while, accompanying the reduction, there is a 
shortening or integration of the whole body, reaching its 
extreme in the crab and the spider. The significance of 
these contrasts, as bearing on the general doctrine of 
Evolution, will be seen when it is pointed out that they arc 
parallel to those -which arise during the development of 
individual annulose animals. In the lobster, the head and 
thorax form one compact box, made by the union of a num- 
ber of segments which in the embryo were separable. Simi- 
larly, the butterfly shows us segments so much more closely 
united than they were in the caterpillar, as to be, some of 
them, no longer distinguishable from one another. The 
Vertcbrata again, throughout their successively higher classes, 
furnish like instances of longitudinal union. In most fishes, 
and in reptiles that have no limbs, none of the vertebra) 
coalesce. In most mammals and in birds, a variable num 
oer of vertebrae become fused together to form the sacrum ; 
md in the higher apes and in man, the caudal vertebra* 
ilso lose their separate individualities in a single os 
weeygie. That which we may distinguish as trans- 

terse integration, is well illustrated among the Annulosa hx 
he development of the nervous system. Leaving, out those 
nost degraded forms which do not present distinct ganglia., 



oli TIIE LAW OP EVOLUTION. 

it is to be observed that the lower annulose animals, in com- 
mon with the larva3 of the higher, are severally characterized 
by a double chain of ganglia running from end to end of 
the body ; while in the more perfectly-formed annulose 
animals, this double chain becomes united into a single 
chain. Mr. Newport has described the course of this con- 
centration as exhibited in insects ; and by Eathke it has been 
traced in crustaceans. During the early stages of the 
Astacus fluviatilis, or common cray-fish, there is a pair of 
separate ganglia to each ring. Of the fourteen pairs be- 
longing to the head and thorax, the three pairs in advance 
of the mouth consolidate into one mass to form the brain, or 
cephalic ganglion. Meanwhile, out of the remainder, the 
first six pairs severally unite in the median line, while the 
rest remain more or less separate. Of these six double 
ganglia thus formed, the anterior four coalesce into one 
mass; the remaining two coalesce into another mass; and then 
these two masses coalesce into one. Here we see longitudi- 
nal and transverse integration going on simultaneously; and 
in the highest crustaceans they are both carried still fur- 
ther. The Vertebrata clearly exhibit transverse integration 
in the development of the generative system. The lowest, 
mammals — the Monotremata — 4n common with birds, to which 
they are in many respects allied, have oviducts which to- 
wards their lower extremities are dilated into cavities, sever- 
ally performing in an imperfect way the function of a utoros. 
" In the Marsupialia there is a closer approximation of the 
two lateral sets of organs on the median line ; for the ovi- 
ducts converge towards one another and meet (without 
coalescing) on the median line ; so that their uterine dilata- 
tions are in contact with each other, forming a true ' double 
uterus/ ... As we ascend the series of l placental ' mam- 
mals, we find the lateral coalescence becoming more and 
more complete. ... In many of the Rodentia the uterus 
still remains completely divided into two lateral halves; 
whilst in others these coalesce at their lower portions, form- 



THE LAW OP EVOLUTION. SI 5 

iug a rudiment of the true 'body* of the uterus in the 
human subject. This part increases at the expense of the 
lateral ' cornua ' in the higher herbivora and carnivora; but 
even in the lower quadruniana the nterus is somewhat cleft 
at its summit/'* 

Under the head of organic integrations, there remain to 
be noted some which do not occur within the limits of one 
organism, and which only in an indirect way involve con- 
centration of matter and dissipation of motion. These are 
the integrations by which organisms are made dependent on 
one another. We may set down two kinds of them — those 
which occur within the same species, and those which occur 
among different species. More or less of the gre- 

garious tendency is general in animals; and when it is 
marked, there is, in addition to simple aggregation, a certain 
degree of combination. Creatures that hunt in packs, or 
that have sentinels, or that are governed by leaders, form 
bodies partially united by co-operation. Among polygamous 
mammals and birds this mutual dependence is closer ; and 
the social insects show us assemblages of individuals of a 
still more consolidated character : some of them having 
carried the consolidation so far that the individuals cannot 
exist if separated. How organisms in general are 

mutually dependent, and in that sense integrated, we shall 
see on remembering — first, that while all animals live 
directly or indirectly on plants, plants live on the carbonic 
acid excreted by animals ; second, that among animals the 
flesh-eaters cannot exist without the plant-eaters ; third, 
that a large proportion of plants can continue their respec- . 
tivc races only by the help of insects, and that in many 
cases particular plants need particular insects. Without 
detailing the more complex connexions, which Mr. Darwin 
has so beautifully illustrated, it will suffice to say that the 
ITlora and Fauna in each habitat, constitute an aggregate 

* Carpenter's Frin. of Comp. Fhys., p. G17. 



316 THE LAW OP EVOLUTION. 

so far integrated that many of its species die out if placed 
amid the plants and animals of another habitat. And it 
is to be remarked that this integration, too, increases as 
organic evolution progresses. 

§ 111. The phenomena set down in the foregoing para- 
graph are introductory to others of a higher order, with 
which they ought, perhaps, in strictness, to be grouped — 
phenomena which, for want of a better word, we may term 
super-organic. Inorganic bodies present us with certain 
facts. Certain other facts, mostly of a more involved kind, 
are presented by organic bodies. There remain yet further 
facts, not presented by any organic body taken singly ; but 
which result from the actions of aggregated organic bodies 
on one another and on inorganic bodies. Though pheno- 
mena of this order are, as we see, foreshadowed among in- 
ferior organisms, they become so extremely conspicuous in 
mankind as socially united, that practically we may consider 
them to commence here. 

In the social organism integrative changes are clearly and 
abundantly exemplified. Uncivilized societies display them 
when wandering families, such as we see among Bushmen, 
join into tribes of considerable numbers. A further pro- 
gress of like nature is everywhere manifested in the subju- 
gation of weaker tribes by stronger ones ; and in the sub- 
ordination of their respective chiefs to the conquering chief. 
The combinations thus resulting, which, among aboriginal 
races, are being continually formed and continually broken 
up, become, among superior races, relatively permanent. If 
we trace the stages through which our own society, or any 
adjacent one, has passed, we see this unification from time 
to time repeated on a larger scale and gaining in stability. 
The aggregation of juniors and the children of juniors under 
elders and the children of elders ; the consequent establish- 
ment of groups of vassals bound to their respective nobles ; 
the subsequent subordination 'of groups of inferior nobles 



THE LAW OP EVOLUTION. 317 

to dukes or earls ; and the still later growth of the kingly 
power over dukes and carls ; are so many instances of in 
creasing consolidation. This process through which petty 
tenures are aggregated in feuds, feuds into provinces, pro- 
vinces into kingdoms, and finally contiguous kingdoms into 
a single one, slowly completes itself by destroying the ori- 
ginal lines of demarcation. And it may be further remarked 
of the European nations as a whole, that in the tendency to 
form alliances more or less lasting, in the restraining influ- 
ences exercised by the several governments over one another, 
in the system, now becoming customary, of settling inter- 
national disputes by congresses, as well as in the breaking 
down of commercial barriers and the increasing facilities of 
communication, we may trace the beginnings of a European 
federation — a still larger integration than any now esta- 
blished. 

But it is not only in these external unions of groups with 
groups, and of the compound groups with one another, that 
the general law is ■ exemplified. It is exemplified also in 
unions that take place internally, as the groups become 
more highly organized. There are two orders of these, 
which may be broadly distinguished as regulative and 
operative. A civilized society is made unlike a 

barbarous one by the establishment of regulative classes — ■ 
governmental, administrative, military, ecclesiastical, legal, 
&c, which, while they have their several special bonds of 
union, constituting them sub-classes, are also held together 
as a general class by a certain community of privileges, 
of blood, of education, of intercourse. In some societies, 
fully developed after their particular types, this con- 
solidation into castes, and this union among the upper 
castes by separation from the lower, eventually grow 
very decided : to be afterwards rendered less decided, 
only in cases of social metamorphosis caused by the in- 
dustrial regime. The integrations that accompany 
the operative or industrial organization, later in origin, 



318 THE LAW OF EVOLUTION. 

are not merely of this indirect kind, but they are also direct 
— they show us physical approach. "We have integrations 
consequent on the simple growth of adjacent parts perform- 
ing like functions ; as, for instance, the junction of Man- 
chester with its calico-weaving suburbs. We have other 
integrations that arise when, out of several places producing 
a particular commodity, one monopolizing more and more of 
the business, draws to it masters and workers, and leaves 
the other places to dwindle ; as witness the growth of the 
Yorkshire cloth-districts at the expense of those in the West 
of England ; or the absorption by Staffordshire of the pot- 
tery-manufacture, and the consequent decay of the esta- 
blishments that once flourished at Derby and elsewhere. 
We have those more special integrations that arise within 
the same city ; whence result the concentration of publishers 
in Paternoster Eow, of corn-merchants about Mark Lane, of 
civil engineers in Great George Street, of bankers in the centre 
of the city. Industrial combinations that consist, not in the 
approximation or fusion of parts, but in the establishment 
of common centres of connexion, are exhibited in the Bank 
clearing-house and the Railway clearing-house. While of 
yet another species are those unions which bring into rela- 
tion, the more or less dispersed citizens who are occupied in 
like ways ; as traders are brought by the Exchange, and as 
are professional men by institutes like those of Civil Engi- 
neers, Architects, &c. 

At first sight these seem to be the last of our instances. 
Having followed up the general law to social aggregates, 
there apparently remain no other aggregates to which it can 
apply. This however is not true. Among what we have 
above distinguished as super-organic phenomena, we shall 
find sundry groups of very remarkable and interesting 
illustrations. Though evolution of the various products of 
human activities cannot be said directly to exemplify the 
integration of matter and dissipation of motion, yet they 
exemplify it indirectly. For the progress of Language, of 



THE LAW OP EVOLUTION. 819 

Science, and of the Arts, industrial and assthefcic, is an ob- 
jective register of subjective changes. Alterations of struc- 
turo in human beings, and concomitant alterations of struc- 
ture in aggregates of human beings, jointly produce corre- 
sponding alterations of structure in all those things which 
humanity creates. As in the changed impress on the wax, 
we read a change in the seal ; so in the integrations of ad- 
vancing Language, Science, and Art, we see reflected cer- 
tain integrations of advancing human structure, individual 
and social. A section must be devoted to each group. 

§ 112. Among uncivilized races, the many-syllabled names 
used for not uncommon objects, as well as the descriptive 
character of proper names, show us that the words used 
for the less-familiar things are formed by compounding 
the words used for the more-familiar things. This process 
of composition is sometimes found in its incipient stage — a 
stage in which the component words are temporarily united 
to signify some un-named object, and, from lack of frequent 
use, do not permanently cohere. But in the majority of 
inferior languages, the process of " agglutination/' as it 
is called, has gone far enough to produce considerable 
stability in the compound words : there is a manifest inte- 
gration. How small is the degree of this integration, how- 
ever, when compared with that reached in well- developed 
languages, is shown both by the great length of the compound 
words used for things and acts of constant occurrence, and 
by the separableness of their elements. Certain North- 
American tongues illustrate this very well. In a Ricarec 
vocabulary extending to fifty names of common objects, 
which in English are nearly all expressed by single syllables, 
there is not one monosyllabic word; and in the nearly-allied 
vocabulary of the Pawnees, the names for these same com- 
mon objects are monosyllabic in but two instances. Things 
so familiar to those hunting tribes as dog and how, arc, in 
the Pawnee language, ashakish and teeragish ; the hand and 



320 THE LAW OF EVOLUTION. 

the eyes are respectively ilesheeree and JceereeJcoo ; for day the 
term is slialcoorooeesliairet, and for devil it is tsaJieehsliJcahoo" 
raiwah ; while the numerals are composed of from two syl- 
lables up to five,, and in Bicaree up to seven. That 
the great length of these familiar words implies a low degree 
of development, and that in the formation of higher lan- 
guages out of lower there is a progressive integration, which 
reduces the polysyllables to dissyllables and monosyllables, 
is an inference confirmed by the history of our own language. 
Anglo-Saxon steorra has been in course of time consolidated 
into English star, mona into moon, and nama into name. 
The transition through the intermediate semi-Saxon is clearly 
traceable. Sunu became in semi- Saxon sune, and in Eng- 
lish son : the final e of sune being an evanescent form of the 
original u. The change from the Anglo-Saxon plural, formed 
by the distinct syllable as, to our pluralformed by the appended 
consonant s, shows us the same thing : smithas in becom- 
ing smiths, and endas in becoming ends, illustrate pro- 
gressive coalescence. So, too, does the disappearance of the 
terminal an in the infinitive mood of verbs ; as shown in the 
transition from the Anglo-Saxon cuman to the semi- Saxon 
eumme, and to the English come. Moreover the process has 
been slowly going on, even since what we distinguish as Eng- 
lish was formed. In Elizabeth's time, verbs were still very 
frequently pluralized by the addition of en — we tell was we 
tellen; and in some rural districts this form of speech may 
even now be heard. In like manner the terminal ed of the 
past tense, has united with the word it modifies. Burn-ed 
has in pronunciation become burnt; and even in writing the 
terminal t has in some cases taken the place of the ed. Only 
where antique forms in general are adhered to, as in the 
church-service, is the distinctness of this inflection still 
maintained. Further, we see that the compound vowels have 
been in many cases fused into single vowels. That in bread 
the e and a were originally both sounded, is proved by the 
fact that they are still so sounded in parts where old habits 



THE LAW OF EVOLUTION. 321 

linger. "We, however, have contracted the pronunciation 
into bred; and we have made like changes in many other 
common words. Lastly, let it be noted that where the fre- 
quency of repetition is greatest, the process is carried 
furthest; as instance the contraction of lord (originally 
la ford) into hid in the mouths of Barristers; and, still better, 
the coalescence of God be with you into Good lye. 

Besides exhibiting in this way the integrative process, 
Language equally exhibits it throughout all grammatical 
development. The lowest kinds of human speech, having 
merely nouns and verbs without inflections to them, mani- 
festly permit no such close union of the elements of a pro- 
position as results when the relations are marked either by 
inflections or by connective words. Such speech is neces- 
sarily what we significantly call " incoherent ." To a con- 
siderable extent, incoherence is seen in the Chinese language. 
" If, instead of saying I go to London, figs come from Turkey, 
the sun shines through the air, we said, I go end London, 
■figs come origin Turkey, the sun shines passage air, we should 
discourse after the manner of the Chinese." From this 
"aptotic" form, there is clear evidence of a transition, by 
coalescence, to a form in which the connexions of words are 
expressed by the addition to themof certain inflectional words. 
"In Languages like the Chinese," remarks Dr. Latham, "the 
separate words most in use to express relation may become 
adjuncts or annexes." To this he adds the fact that " the 
numerous inflexional languages fall into two classes. In one, 
the inflexions have no appearance of having been separato 
words. In the other, their origin as separate words is de- 
monstrable." From which the inference drawn is, that the 
"aptotic" languages, by the more and more constant use 
of adjuncts, gave rise to the "agglutinate" languages, or 
those in which the original separatencss of the inflexional 
parts can be traced ; and that out of these, by further use, 
arose the " amalgamate " languages, or those in which tho 
original separatencss of the inflexional parts can no longer 



322 THE LAW OF EVOLUTION. 

be traced. Strongly corroborative of this inference 

is the unquestionable fact, that by such a process there have 
grown out of the amalgamate languages, the " anaptotic M 
languages ; of which our own is the most perfect example 
—languages in which, by further consolidation, inflexions 
have almost disappeared, while, to express the verbal rela- 
tions, certain new kinds of words have been developed. 
When we see the Anglo-Saxon inflexions gradually lost by 
contraction during the development of English, and, though 
to a less degree, the Latin inflexions dwindling away during 
the development of French, we cannot deny that grammati- 
cal structure is modified by integration; and seeing how 
clearly the earlier stages of grammatical structure are ex- 
plained by it, we can scarcely doubt that it has been going 
on from the first. 

In proportion to the degree of this integration, is the 
extent to which integration of another order is carried. 
Aptotic languages are, as already pointed out, necessarily 
incoherent — the elements of a proposition cannot be com- 
pletely tied into a whole. But as fast as coalescence pro- 
duces inflected words, it becomes possible to unite them 
into sentences of which the' parts are so mutually dependent 
that no considerable change can be made without destroying 
the meaning. Yet a further stage in this process may be 
noted. After the development of those grammatical forms 
which make definite statements possible, we do not at first 
find them used to express anything beyond statements of a 
simple kind. A single subject with a single predicate, ac- 
companied by but few qualifying terms, are usually all. If 
we compare, for instance, the Hebrew scriptures with writ- 
ings of modern times, a marked difference of aggregation 
among the groups of words, is visible. In the number of 
subordinate propositions which accompany the principal 
one; in the various complements to subjects and predicates; 
and in the numerous qualifying clauses — all of them united 
into one complex whole — many sentences in modern coin* 



THE LAW OF EVOLUTION. 323 

positions exhibit a degree of integration not to be found in 
ancient ones. \ 

§ 113. The history of Science presents facts of the same 
meaning at every step. Indeed the integration of groups 
of like entities and like relations, may be said to constitute 
the most conspicuous part of scientific progress. A glance 
at the classificatory sciences, shows us that the confused 
incoherent aggregations which the vulgar make of natural 
objects, are gradually rendered complete and compact, and 
bound up into groups within groups. While, instead of 
considering all marine creatures as fish, shell-fish, and jelly- 
fish, Zoology establishes divisions and sub-divisions under 
the heads Vertcbrata, Annulosa, Mollnsca, &c. ; and while, 
in place of the wide and vague assemblage popularly de- 
scribed as " creeping things," it makes the specific classes 
Annelida, Myriopoda, Insect a, Arachnida ; it simultaneously 
gives to these an increasing consolidation. The several 
orders and genera of which each consists, are arranged ac- 
cording to their affinities and tied together under common 
definitions ; at the same time that, by extended observation 
and rigorous criticism, the previously unknown and un- 
determined forms are integrated with their respective con- 
geners. Nor is the process less clearly manifested 
in those sciences which have for their subject-matter, not 
classified objects but classified relations. Under one of its 
chief aspects, scientific advance is the advance of generaliza- 
tion ; and generalizing is uniting into groups all like co- 
cxistencies and sequences among phenomena. ' The colliga- 
tion of many concrete relations into a generalization of 
the lowest order, exemplifies thi3 principle in its simplest 
form ; and it is again exemplified in a more complex form 
by the colligation of these lowest generalizations into higher 
ones, and these into still higher ones. Year by year are 
established certain connexions among orders of phenomena 
that appear unallicd; and these connexions, multiplying and 



824 THE LAW OF EVOLUTION. 

strengthening, gradually bring the seemingly unallied 
orders under a common bond. When, for example, 
Humboldt quotes the saying of the Swiss — " it is going to 
rain because we hear the murmur of the torrents nearer/' — 
when he remarks the relation between this and an observa- 
tion of his own, that the cataracts of the Orinoco are heard 
at a greater distance by night than by day — when he notes 
the essential parallelism existing between these facts and 
the fact that the unusual visibility of remote objects 
is also an indication of coming rain — and when he 
points out that the common cause of these variations is the 
smaller hindrance offered to the passage of both light and 
sound, by media which are comparatively homogeneous, 
either in temperature or hygrometric state; he helps in 
bringing under one generalization the phenomena of light 
and those of sound. Experiment having shown that these 
conform to like laws of reflection and refraction, the conclu- 
sion that they are both produced by undulations gains pro- 
bability: there is an incipient integration of two great orders 
of phenomena, between which no connexion was suspected in 
times past. A still more decided integration has been of late 
taking place between the once independent sub-sciences of 
Electricity, Magnetism, and Light. 

The process will manifestly be carried much further. Such 
propositions as those set forth in preceding chapters, on 
"The Persistence of Force," "The Transformation and 
Equivalence of Forces," " The Direction of Motion," and 
" The Ehythm of Motion," unite within single bonds phe- 
nomena belonging to all orders of existences. And if there 
is such a thing as that which we here understand by 
Philosophy, there must eventually be reached a universal 
integration. 

§ 114. ISTor do the industrial and aesthetic Arts fail to 
supply us with equally conclusive evidence. The progress 
from rude, small, and simple tools, to perfect, complex, and 



THE LAW OF EVOLUTION. 325 

large machines, is a progress in integration. Among what 
are classed as the mechanical powers, the advance from the 
lever to the wheel-and-axle is an advance from a simple 
agent to an agent made up of several simple ones. On com- 
paring the wheel-and-axle, or any of the machines used in 
early times with those used now, we see that in each of our 
machines several of the primitive machines are united into 
one. A modern apparatus for spinning or weaving, for 
making stockings or lace, contains not simply a lever, an in- 
clined plane, a screw, a wheel-and-axle, joined together ; but 
several of each integrated into one whole. Again, in early 
ages, when horse-power and man-power were alone em- 
ployed, the motive agent was not bound up with the tool 
moved ; but the two have now become in many cases fused 
together. The fire-box and boiler of a locomotive are com- 
bined with the machinery which the steam works. A still 
more extensive integration is exhibited in every factory. 
Here we find a large number of complicated machines, 
all connected by driving shafts with the same steam-engine 
— all united with it into one vast apparatus. 

Contrast the mural decorations of the Egyptians and 
Assyrians with modern historical paintings, and there 
becomes manifest a great advance in unity of composition — 
in the subordination of the parts to the whole. One of 
these ancient frescoes is, in truth, made up of a number of 
pictures that have little mutual dependence. The several 
figures of which each group consists, show very imperfectly 
by their attitudes, and not at all by their expressions, the 
relations in which they stand to each other: the respective 
groups might be separated with but little loss of meaning ; 
and the centre of chief interest, which should link all parts 
together, is often inconspicuous. The same trait may be 
noted in the tapestries of medieval days. Representing 
perhaps a hunting scene, one of these contains men, horses, 
dogs, beasts, birds, trees, and flowers, miscellaneously dis- 
persed: the living objects being variously occupied, and 



520 THE LAW OF EVOLUTION. 

mostly with no apparent consciousness of eacli other's proxi- 
mity. But in the paintings since produced, faulty as many 
of them are in this respect, there is always a more or less 
distinct co-ordination of parts — an arrangement of atti- 
tudes, expressions, lights, and colours, such as to combine 
the picture into an organic whole; and the success with 
which unity of effect is educed from variety of components, 
is a chief test of merit. 

In music, progressive integration is displayed in still 
more numerous ways. The simple cadence embracing but 
a few notes, which in the chants of savages is monotonously 
repeated, becomes, among civilized races, a long series of 
different musical phrases combined into one whole ; and so 
complete is the integration, that the melody cannot be 
broken off in the middle, nor shorn of its final note, without 
giving us a painful sense of incompleteness. When to the 
air, a bass, a tenor, and an alto are added ; and when to the 
harmony of different voice-parts there is added an accom- 
paniment; we see exemplified integrations of another order, 
which grow gradually more elaborate. And the process is 
carried a stage higher when these complex solos, concerted 
pieces, choruses, and orchestral effects, are combined into 
the vast ensemble of a musical drama ; of which, be it re- 
membered, the artistic perfection largely consists in the 
subordination of the particular effects to the total effect. 

Once more the Arts of literary delineation, narrative and 
dramatic, furnish us with parallel illustrations. The tales 
of primitive times, like those with which the story-tellers of 
the East still daily amuse their listeners, are made up of 
successive occurrences that are not only in themselves un- 
natural, but have no natural connexion: they are but sc 
many separate adventures put together without necessary- 
sequence. But in a good modern work of imagination, the 
events are the proper products of the characters working 
under given conditions ; and cannot at will be changed in 
their order or kind, without injuring or destroying the 



T1IE LAW OF EVOLUTION. 327 

general effect. Further, the characters themselves, which 
in early fictions play their respective parts without show- 
ing how their minds are modified by one another or by 
the events, are now presented to us as held together by 
complex moral relations, and as acting and re-acting upon 
one another's natures. 

§ 115. Evolution then, under its primary aspect, is a 
change from a less coherent form to a more coherent 
form, consequent on the dissipation of motion and integra- 
tion of matter. This is the universal process through which 
sensible existences, individually and as a whole, pass during 
the ascending halves of their histories. This proves to be 
a character displayed equally in those earliest changes which 
the Universe at large is supposed to have undergone, and in 
those latest changes which we trace in society and the pro- 
ducts of social life. And throughout, the unification pro- 
ceeds in several ways simultaneously. 

Alike during the evolution of the Solar System, of a 
planet, of an organism, of a nation, there is progressive 
aggregation of the entire mass. This may be shown by the 
increasing density of the matter already contained in it ; or 
by the drawing into it of matter that was before separate ; 
or by both. But in any case it implies a loss of relative mo- 
tion. At the same time, the parts into which the mass 
lias divided, severally consolidate in like manner. We see 
this in that formation of planets and satellites which has 
gone on along with the concentration of the nebula out of 
which the Solar System originated ; we see it in the growth 
of separate organs that advances, pari passu, with the 
growth of each organism j we see it in that rise of 
special industrial centres and special masses of popu- 
lation, which is associated with the rise of each society. 
Always more or less of local integration accompanies 
the general integration. And then, beyond the 
increased closeness of juxta-position among the compo- 



OZV THE LAW OP EVOLUTION. 

nents of the whole, and among the components of each part, 
there is increased closeness of combination among the 
parts, producing mutual dependence of them. Dimly fore- 
shadowed as this mutual dependence is in inorganic exist- 
ences, both celestial and terrestrial, it becomes distinct in 
organic and super-organic existences. From the lowest 
living forms upwards, the degree of development is marked 
by the degree in which, the several parts constitute a co- 
operative assemblage. The advance from those creatures 
which live on in each part when cut to pieces, up to those 
creatures which cannot lose any considerable part without 
death, nor any inconsiderable part without great constitu- 
tional disturbance, is an advance to creatures which, while 
more integrated in respect to their solidification, are also 
more integrated as consisting of organs that live for and by 
each other. The like contrast between undeveloped and de- 
veloped societies, need not be shown in detail : the ever-in- 
creasing co-ordination of parts, is conspicuous to all. And 
it must suffice just to indicate that the same thing holds true 
of social products : as, for instance, of Science ; which has 
become highly integrated not only in the sense that each 
division is made up of mutually-dependent propositions, but 
in the sense that the several divisions are mutually de- 
pendent — cannot carry on their respective investigations 
without aid from one another. 



CHArTER XV. 
the law of evolution continued. 

§ 11G. Changes great in their amounts and various in 
their kinds, which accompany those dealt with in the last 
chapter, have thus far been wholly ignored — or, if tacitly 
recognized, have not been avowedly recognized. Integration 
of each whole has been described as taking place simul- 
taneously with integration of each of the parts into which the 
whole divides itself. But how comes each whole to divide itself 
into parts ? This is a transformation more remarkable than 
the passage of the whole from an incoherent to a coherent 
state; and a formula which says nothing about it omits more 
than half the phenomena to be formulated. 

This larger half of the phenomena we have now to treat. 
In this chapter we are concerned with those secondary re- 
distributions of matter and motion that go on along with 
the primary re-distribution. We saw that while in very 
incoherent aggregates, secondary re-distributions produce 
but evanescent results, in aggregates that reach and main- 
tain a certain medium state, neither very incoherent nor 
very coherent, results of a relatively persistent character are 
produced — structural modifications. And our next inquiry 
must be — "What is the universal expression for these struc- 
tural modifications ? 

Already an implied answer has been given by the title — 
Compound Evolution. Already in distinguishing as simple 
Evolution, that integration of matter and dissipation of mo- 



330 THE LAW OF EVOLUTION CONTINUED. 

tion which is unaccompanied by secondary re-distributions, 
it has been tacitly asserted that where secondary re-distri- 
butions occur, complexity arises. Obviously if, while there 
has gone on a transformation of the incoherent into the co- 
herent, there have gone on other transformations, the mass, 
instead of remaining uniform, must have become multiform. 
The proposition is an identical one. To say that the 
primary re-distribution is accompanied by secondary re-dis- 
tributions, is to say that along with the change from a 
diffused to a concentrated state, there goes on a change from 
a homogeneous state to a heterogeneous state. The com- 
ponents of the mass while they become integrated also 
become differentiated.* 

This, then, is the second aspect under which we have to 
study Evolution. As, in the last chapter, we contemplated 
existences of all orders as displaying progressive integration; 
so, in this chapter, we have to contemplate them as display- 
ing progressive differentiation. 

§ 117. A growing variety of structure throughout our 
Sidereal System, is implied by the contrasts that indicate an 
aggregative process throughout it. We have nebulas that 
are diffused and irregular, and others that are spiral, 
annular, spherical, &c. We have groups of stars the mem- 
bers of which are scattered, and groups concentrated in all 
degrees down to closely-packed globular clusters. We have 
these groups differing in the numbers of their members, 
from those containing several thousand stars to those con- 

* The terms here used must be understood in relative senses. Since 
we know of no such thing as absoute diffusion or absolute concentration, 
the change can never be anything but a change from a more diffused 
to a less diffused state — from smaller coherence to greater coherence; 
and, similarly, as no concrete existences present us with absolute 
simplicity — as nothing is perfectly uniform — as we nowhere find 
complete homogeneity — the transformation is literally always towards 
greater complexity, or increased multiformity, or further heterogeneity. 
This qualification the reader must habitually bear in mind. 



TEE LAW OP EVOLUTION CONTINUED. 33 1 

taining but two. Among individual stars there are great 
contrasts, real as well as apparent, of size; and from their 
unlike colours, as well as from their unlike spectra, 
numerous contrasts among their physical states are infer- 
able. Beyond which heterogeneities in detail there are 
general heterogeneities. . Nebulas are abundant in some 
regions of the heavens, while in others there are only stars. 
Here the celestial spaces are almost void of objects; and there 
we see dense aggregations, nebular and stellar together. 

The matter of our Solar System during its concentration 
lias become more multiform. The aggregating gaseous 
spheroid, dissipating its motion, acquiring more marked un- 
likenesses of density and temperature between interior and 
exterior, and leaving behind from time to time annular por- 
tions of its mass, underwent differentiations that increased in 
number and degree, until there was evolved the existing or- 
ganized group of sun, planets, and satellites. The hetero- 
geneity of this is variously displayed. There are the immense 
contrasts between the sun and the planets, in bulk and in 
weight ; as well as the subordinate contrasts of like kind 
between one planet and another, and between the planets 
and their satellites. There is the further contrast between 
the sun and the planets in respect of temperature ; and there is 
reason to suppose that the planets and satellites differ from 
one another in their proper heats, as well as in the heats winch 
they receive from the sun. Bearing in mind that they also 
differ in the inclinations of their orbits, the inclinations of 
their axes, in their specific gravities and in their physical 
constitutions, we see how decided is the complexity wrought 
in the Solar System by those secondary re-distributions that 
have accompanied the primary re-distribution. 

§ 118. Passing from this hypothetical illustration, which 
must be taken for what it is worth, without prejudice to the- 
general argument, let us descend to an order of evidence 
less open to objection. 



$32 THE LAW OJb 1 EVOLUTION CONTINUED. 

It is now generally agreed among geologists that the Earth 
was once a mass of molten matter ; and that its inner parts 
are still fluid and incandescent. Originally, then, it was 
comparatively homogeneous in consistence ; and, because oi 
the circulation that takes place in heated fluids, must have 
been comparatively homogeneous in temperature. It must, 
too, have been surrounded by an atmosphere consisting 
partly of the elements of air and water, and partly of those 
various other elements which assume gaseous forms at high 
temperatures. That cooling by radiation which, though ori- 
ginally far more rapid than now, necessarily required an im- 
mense time to produce decided change, must at length 
have resulted in differentiating the portion most able to part 
with its heat ; namely, the surface. A further cooling, lead- 
ing to deposition of all solidifiable elements contained in the 
atmosphere, and finally to precipitation of the water and 
separation of it from the air, must thus have caused a second 
marked differentiation ; and as the condensation must have 
commenced on the coolest parts of the surface — namely, 
about the poles — there must so have resulted the first geo- 
graphical distinctions. 

To these illustrations of growing heterogeneity, which, 
though 'deduced from the known laws of matter, may be re- 
garded as hypothetical, Geology adds an extensive series 
that have been inductively established. The Earth's struc- 
ture has been age after age further involved by the multi- 
plication of the strata which form its crust ; and it has been 
age after age further involved by the increasing composi- 
tion of these strata, the more recent of which, formed 
from the detritus of the more ancient, are many of them 
rendered highly complex by the mixtures of materials they 
contain. This heterogeneity has been vastly in- 

creased by the action of the Earth's still molten nucleus 
on its envelope; whence have resulted not only a great 
variety of igneous rocks, but the tilting up of sedi- 
mentary strata at all angles, the formation of faults and 



TTIE LAW OF EVOLUTION CONTINUED. 333 

etallic veins, the production of endless dislocations and ir- 
regularities. Again,, geologists teach us that the 
Earth's surface has been growing more varied in elevation — 
that the most ancient mountain systems are the smallest, 
and the Andes and Himalayas the most modern; while, in 
ill probability, there have been corresponding changes in 
the bed of the ocean. As a consequence of this ceaseless 
multiplication of differences, we now find that no consider- 
able portion of the Earth's exposed surface, is like any other 
portion, either in contour, in geologic structure, or in 
chemical composition ; and that, in most parts, the surface 
changes from mile to mile in all these characteristics. 

There has been simultaneously going on a gradual dif- 
ferentiation of climates. As fast as the Earth cooled and 
its crust solidified, inequalities of temperature arose be- 
tween those parts of its surface most exposed to the sun 
and those less exposed; and thus in time there came to 
be the marked contrasts between regions of perpetual ice 
and snow, regions where winter and summer alternately 
-reign for periods varying according to the latitude, and 
regions where summer follows summer with scarcely 
an appreciable variation. Meanwhile, elevations 

and subsidences, recurring here and there over the Earth's 
BTOst, tending as they have done to produce irre- 
gular distribution of land and sea, have entailed various 
modifications of climate beyond those dependent on latitude; 
while a yet further series of such modifications has been 
produced by increasing differences of height in the lands, 
which have in sundry places brought arctic, temperate, 
and tropical climates to within a few miles of one another. 
The general results of these changes are, that every 
extensive region has its own metcorologic conditions, and 
that every locality in each region differs more or less from 
others in those conditions : as in its structure, its contour, 
its soil. 

Thus, between our existing Earth, the phenomena of 



331 THE LAW OP EVOLUTION CONTINUED. 

whose varied crust neither geographers, geologists, minera- 
logists nor meteorologists have yet enumerated, and the 
molten globe out of which it was evolved, the contrast in 
heterogeneity is sufficiently striking. 

§ 119. The clearest, most numerous, and most varied il- 
lustrations of the advance in multiformity that accompanies 
the advance in integration, are furnished by living organic 
bodies. Distinguished as we found these to be by the great 
quantity of their contained motion, they exhibit in an ex- 
treme degree the secondary re-distributions which contained 
motion facilitates. The history of every plant and every 
animal, while it is a history of increasing bulk, is also a 
history of simultaneously-increasing differences among the 
parts. This transformation has several aspects. 

The chemical composition which is almost uniform through- 
out the substance of a germ, vegetal or animal, gradually 
ceases to be uniform. The several compounds, nitrogenous 
and non-nitrogenous, which were homogeneously mixed, 
segregate by degrees, become diversely proportioned in 
diverse places, and produce new compounds by transforma- 
tion or modification. In plants the albuminous 
and amylaceous matters which form the substance of the 
embryo, give origin here to a preponderance of chlorophyll 
and there to a preponderance of cellulose. Over the parts 
that are becoming leaf-surfaces, certain of the materials are 
metamorphosed into wax. In this place starch passes into 
one of its isomeric equivalents, sugar ; and in that place 
into another of its isomeric equivalents, gum. By secondary 
change some of the cellulose is modified into wood; while 
some of it is modified into the allied substance which, in 
large masses, we distinguish as cork. And the more numer- 
ous compounds thus gradually arising, initiate further un- 
likenesses by mingling in unlike ratios. An animal- 
ovum, the components of which are at first evenly diffuse*"] 
among one another, chemically transforms itself in like 



THE LAW OF EVOLUTION CONTINUED. 335 

manner. Its protein, its fats, its salts, become dissimilarly 
roportioned in different localities ; and multiplication of 
isomeric forms leads to further mixtures and combinations 
that constitute many minor distinctions of parts. Here a 
mass darkening by accumulation of keinatine, presently dis- 
solves into blood. There fatty and albuminous matters 
uniting, compose nerve-tissue. At this spot the nitrogenous 
substance takes on the character of cartilage ; and at that, 
calcareous salts, gathering together in the cartilage, lay the 
foundation of bone. All these chemical differentiations 
slowly and insensibly become more marked and more mul- 
tiplied. 

Simultaneously there arise contrasts of minute struc- 
ture. Distinct tissues take the place of matter that 
I had previously no recognizable unlikenesses of parts ; and 
each of the tissues first produced undergoes secondary 
modifications, causing sub-species of tissues. The 

granular protoplasm of the vegetal germ, equally with that 
which forms the unfolding point of every shoot, gives origin 
to cells that are at first alike. Some of these, as they grow, 
flatten and unite by their edges to form the outer layer. 
Others elongate greatly, and at the same time join together 
in bundles to lay the foundation of woody-fibre. Before 
they begin to elongate, certain of these cells show a break- 
ing-up of the lining deposit, which, during elongation, 
becomes a spiral thread, or a reticulated framework, or a 
series of rings ; and by the longitudinal union of cells so 
lined, vessels are formed. Meanwhile each of these dif- 
ferentiated tissues is re-differentiated : instance that which 
constitutes the essential part of the leaf, the upper 
stratum of which is composed of chlorophyll- cells that 
remain closely packed, while the lower stratum becomes 
spongy. Of the same general character are the 

transformations undergone by the fertilized ovum, which, at 
first a cluster of similar cells quickly reaches a stage in 
which these cells have become dissimilar. More frequently re- 



33 G TIIE LAW OP EVOLUTION CONTINUED. 

curring fission of the superficial cells, a resulting smaller 
size of them, and subsequent union of them into an outer 
layer, constitute the first differentiation; and the middle 
area of this layer is rendered unlike the rest by still more 
active processes of like kind. By such modifications upon 
modifications, too multitudinous to enumerate here, arise 
the classes and sub-classes of tissues which, variously in- 
volved one with another, compose organs. 

Equally conforming to the law are the changes of general 
shape and of the shapes of organs. All germs are at first 
spheres and all organs are at first buds or mere rounded 
lumps. From this primordial uniformity and simplicity, 
there takes place divergence, both of the wholes and the 
leading parts, towards multiformity of contour and towards 
complexity of contour. Cut away the compactly- 

folded young leaves that terminate every shoot, and the 
nucleus is found to be a central knob bearing lateral knobs, 
one of which may grow into either a leaf, a sepal, a petal, 
a stamen, a carpel : all these eventually-unlike parts being at 
first alike. The shoots themselves also depart from their 
primitive unity of form; and while each branch becomes more 
or less different from the rest, the whole exposed part of the 
plant becomes different from the imbedded part. So, 

too, is it with the organs of animals. One of the Articulata, 
for instance, has limbs that are originally indistinguishable 
from one another — compose a homogeneous series ; but by 
continuous divergences there arise among them unliknesses 
of size and form, such as we see in the crab and the lobster. 
Vertebrate creatures equally exemplify this truth. The 
wings and legs of a bird are of similar shapes when they 
bud-out from the sides of the embryo. 

Thus in every plant and animal, conspicuous secon- 
dary re-distributions accompany the primary re-distribu- 
tion. A first difference between two parts ; in each 
of these parts other differences that presently become a3 
marked as the first ; and a like multiplication of differences 



THE LAW OF EVOLUTION CONTINUED. 337 

in geometrical progression, until there is readied that com- 
plex combination constituting the adult. This is the history 
of all living things whatever. Pursuing an idea which 
Harvey set afloat, it has been shown by Wolff and Yon Baer, 
that during its evolution each organism passes from a state 
of homogeneity to a state of heterogeneity. For a gene- 
ration this truth has been accepted by biologists.* 

§ 120. When we pass from individual forms of life to life 

m general, and ask whether the same law is seen in the 

nsemble of its manifestations — whether modern plants and 

animals have more heterogeneous structures than ancient ones, 

* It was in 1S52 that I became acquainted with Von Baer's expression of 
this general principle. The universality of law had ever been with me a 
postulate, carrying with it a correlative belief, tacit if not avowed, in unity 
of method throughout Nature. This statement that every plant and 
animal, originally homogeneous becomes gradually heterogeneous, set up a 
process of co-ordination among accumulated thoughts that were previously 
unorganized, or but partially organized. It is true that in Social Statics 
(Part IV., §§ 12 — 1G), written before meeting with Von Baer's formula, 
the development of an individual organism and the development of the 
social organism, are described as alike consisting in advance from simplicity 
to complexity, and from independent like parts to mutually-dependent 
unlike parts — a parallelism implied by Milne-Edwards' doctrine of "the 
physiological division of labour." But though admitting of extension to 
other super-organic phenomena, this statement was too special to admit of 
extension to inorganic phenomena. The great aid rendered by Von Baer's 
formula arose from its higher generality ; since, only when organic trans- 
formations had been expressed in the most general terms, was the way 
opened for seeing what they had in common with inorganic transformations. 
The conviction that this process of change gone through by each evolving 
organism, is a process gone through by all things, found its first coherent 
statement in an essay on " Progress : its Law and Cause ; " which I pub- 
lished in the Westminster Review for April, 1S57 — an essay with the first 
half of which this chapter coincides in substance, and partly in form. 
In that essay, however, as also in the first edition of this work, I 
fell into the error of supposing that the transformation of the homo- 
geneous into the heterogeneous constitutes Evolution ; whereas, as wo 
have seen, it constitutes the secondary re-distribution accompanying 
the primary re-distribution in that Evolution which we distinguish as com- 
pound — or rather, as we shall presently sec, it constitutes the most con- 
spicuous part of this secondary re-distribution. 



OOti THE LAW OF EVOLUTION CONTINUED. 

and whether the Earth's present Flora and Fauna are more 
heterogeneous than the Flora and Fauna of the past,' — we find 
the evidence so fragmentary, that every conclusion is open to 
dispute. Two-thirds of the Earth's surface being covered 
by water ; a great part of the exposed land being inaccessible 
to, or untravelled by, the geologist ; the greater part of the 
remainder having been scarcely more than glanced at ; and 
even the most familkr portions, as England, having been so 
imperfectly explored, that a new series of strata has been 
added within these few years, — it is manifestly impossible for 
us to say with any certainty what creatures have, and what 
have not, existed at any particular period. Considering the 
perishable nature of many of the lower organic forms, the 
metamorphosis of many sedimentary strata, and the gaps that 
occur among the rest, we shall see further reason for distrust- 
ing our deductions. On the one hand, the repeated discovery 
of vertebrate remains in strata previously supposed to contain 
none, — of reptiles where only fish were thought to exist, — of 
mammals where it was believed there were no creatures higher 
than reptiles ; renders it daily more manifest how small is the 
value of negative evidence. On the other hand, the worthless- 
ness of the assumption that we have discovered the earliest, 
or anything like the earliest, organic remains, is becoming 
equally clear. That the oldest known aqueous formations have 
been greatly changed by igneous action, and that still older 
ones have been totally transformed by it, is becoming undeni- 
able. And the fact that sedimentary strata earlier than any 
we know, have been melted up, being admitted, it must also 
be admitted that we cannot say how far back in time this 
destruction of sedimentary strata has been going on. Thus it 
is manifest that the title Palceozoic, as applied to the earliest 
known fossiliferous strata, involves a petitio principii ; and 
that, for aught we know to the contrary, only the last few 
chapters of the Earth's biological history may have come down 
to us. 

All inferences drawn from such scattered facts as we find* 



THE LAW OF EVOLUTION CONTINUED. 



839 



must thus be extremely questionable. If, looking at the 
general aspect of evidence, a progressionist argues that the 
earliest known vertebrate remains are those of Pishes, which 
are the most homogeneous of the vcrtcbrata ; that Reptiles, 
which are more heterogeneous, are later ; and that later still, 
and more heterogeneous still, are Mammals and Birds ; it may 
be replied that the Palaeozoic deposits, not being estuary de- 
posits, are not likely to contain the remains of terrestrial ver- 
tebrata, which may nevertheless have existed at that era. 
The same answer may be made to the argument that the 
vertebrate fauna of the Palaeozoic period, consisting so far as 
we know, entirely of Pishes, was less heterogeneous than the 
modern vertebrate fauna, which includes Reptiles, Birds and 
Mammals, of multitudinous genera ; or the luiiformitarian 
may contend with great show of truth, that this appearance 
of higher and more varied forms in later geologic eras, was 
due to progressive immigration — that a continent slowly 
upheaved from the ocean at a point remote from pre-existing 
continents, would necessarily be peopled from them in a suc- 
cession like that which our strata display. At the 
same time the counter- arguments may be proved equally in- 
conclusive. "When, to show that there cannot have been a con- 
tinuous evolution of the more homogeneous organic forms 
into the more heterogeneous ones, the. uniformitarian points 
to the breaks that occur in the succession of these forms ; there 
is the sufficient answer that current geological changes show 
us why such, breaks must occur, and why, by subsidences and 
elevations of large area, there must be produced such marked 
breaks as those which divide the three great geologic epochs. 
Or again, if the opponent of the development hypothesis cites 
the facts set forth by Professor Huxley in his lecture on 
" Persistent Types "—if he points out that " of some two 
hundred known orders of plants, not one is exclusively fossil," 
while " among animals, there is not a single totally extinct 
class ; and of the orders, at the outside not more, than seven 
per cent, are unrepresented in the existing creation " — if he 



31 D TUB LAW OP EVOLUTION CONTINUED. 

urges that among these some have continued from the 
Silurian epoch to our own day with scarcely any change — 
and if he infers that there is evidently a much greater average 
resemblance between the living forms of the past and those of 
the present, than consists with this hypothesis ; there is still 
a satisfactory reply, on which in fact Prof. Huxley insists ; 
namely, that we have evidence of a " pre-geologic era " of 
unknown duration. And indeed, when it is remembered, 
that the enormous subsidences of the Silurian period show 
the Earth's crust to have been approximately as thick then as 
it is now — when it is concluded that the time taken to form 
so thick a crust, must have been immense as compared with 
the time which has since elapsed — when it is assumed, as it 
must be, that during this comparatively immense time the 
geologic and biologic changes went on at their usual rates ; 
it becomes manifest, not only that the pakeontological 
records which we find, do not negative the theory of 
evolution, but that they are such as might rationally be 
looked for. 

Moreover, it must not be forgotten that though the evidence 
suffices neither for proof nor disproof, yet some of its most 
conspicuous facts support the belief, that the more heteroge- 
neous organisms and groups of organisms, have been evolved 
from the less heterogeneous ones. The average community 
of type between the fossils of adjacent strata, and still more 
the community that is found between the latest tertiary 
fossils and creatures now existing, is one of these facts. The 
discovery in some modern deposits of such forms as the 
Pala>otherium and Anaplotherium, which, if we may rely on 
Prof. Owen, had a type of structure intermediate between 
some of the types now existing, is another of these facts. And 
the comparatively recent appearance of Man, is a third fact of 
this kind, which possesses still greater significance. Hence 
we may say, that though our knowledge of past life upon t he 
Earth, is too scanty to justify us in asserting an evolution of t 
the simple into the complex, either in individual forms or in 



THE LAW OF EVOLUTION CONTINUED. 311 

the aggregate of forms ; yet the knowledge we have, not only 
consists with the belief that there has been such an evolution, 
but rather supports it than otherwise. 

§121. Whether an advance from the homogeneous to the 
heterogeneous is or is not displayed in the biological history 
of the globe, it is clearly enough displayed in the progress of 
the latest and most heterogeneous creature — Man. It is alike 
true that, during the period in which the Earth has been 
peopled, the human organism has grown more heterogeneous 
among the civilized divisions of the species ; and that the 
species, as a whole, has been made more heterogeneous by 
the multiplication of races and the differentiation of these 
races from each other. In proof of the first of these 

positions, we may cite the fact that, in the relative develop- 
ment of the limbs, the civilized man departs more widely 
from the general type of the placental mammalia, than do the 
lower human races. Though often possessing well- developed 
body and arms, the Papuan has extremely small legs : thus 
reminding us of the quadruniana, in which there is no great 
contrast in size between the hind and fore limbs. But in the 
European, the greater length and massiveness of the legs has 
become very marked — the fore and hind limbs are relatively 
more heterogeneous. Again, the greater ratio which the 
cranial bones bear to the facial bones, illustrates the same 
truth. Among the vertebrata in general, evolution is marked 
by an increasing heterogeneity in the vertebral column, and 
more especially in the segments constituting the skull : the 
higher forms being distinguished by the relatively larger size 
of the bones which cover the brain, and the relatively smaller 
size of those which form the jaws, &c. Now, this character- 
istic, which is stronger in Man than in any other creature, is 
Btronger in the European than in the savage. Moreover, 
judging from the greater extent and variety of faculty he ex- 
hibits, we may infer that the civilized man has also a more 
complex or heterogeneous nervous system than the uncivil- 



512 THE LAW OP EVOLUTION CONTINUED. 

Ized man ; and indeed the fact is in part visible in the in- 
creased ratio which his cerebrum bears to the subjacent 
ganglia. If further elucidation be needed, we may find it in 
every nursery. The infant European has sundry marked 
points of resemblance to the lower human races ; as in the 
flatness of the alse of the nose, the depression of its bridge, the 
divergence and forward opening of the nostrils, the form of 
the lips, the absence of a frontal sinus, the width between the 
eyes, the smallness of the legs. Now, as the developmental 
process by which these traits are turned into those of the 
adult European, is a continuation of that change from the 
homogeneous to the heterogeneous displayed during the pre- 
vious evolution of the embryo, which every physiologist will 
admit ; it follows that the parallel developmental process by 
which the like traits of the barbarous races have been turned 
into those of the civilized races, has also been a continuation 
of the change from the homogeneous to the heterogene- 
ous. The truth of the second position — that Mankind, 
as a whole, have become more heterogeneous — is so obvious as 
scarcely to need illustration. Every work on Ethnology, by 
its divisions and subdivisions of races, bears testimony to it. 
Even were we to admit the hypothesis that Mankind origin- 
ated from several separate stocks, it would still remain true 
that as, from each of these stocks, there have sprung many 
now widely different tribes, which are proved by philological 
evidence to have had a common origin, the race as a whole 
is far less homogeneous than it once* was. Add to which, 
that we have, in the Anglo-Americans, an example of a new 
variety arising within these few generations ; and that, if we 
may trust to the descriptions of observers, we are likely soon 
to have another such example in Australia. 

§ 122. On passing from Humanity under its individual form, 
to Humanity as socially embodied, we find the general law still 
more variously exemplified. The change from the homo- 
geneous to the heterogeneous, is displayed equally in the 



THE LAW OF EVOLUTION CONTINUED. 313 

progress of civilization as a whole, and in the progress of 
every tribe or nation ; and is still going on with increasing 
rapidity. 

As we see in existing barbarous tribes, society in its first 
and lowest form is a homogeneous aggregation of individuals 
having like powers and like functions : the only marked dif- 
ference of function being that which accompanies difference 
of sex. Every man is warrior, hunter, fisherman, tool-maker, 
builder ; eveiy woman performs the same drudgeries ; every 
family is self-sufficing, and, save for purposes of aggression 
and defence, might as well live apart from the rest. Very 
early, however, in the process of social evolution, we find an 
incipient differentiation between the governing and the go- 
verned. Some kind of chieftainship seems coeval with the 
first advance from the state of separate wandering families to 
that of a nomadic tribe. The authority of the strongest 
makes itself felt among a body of savages, as in a herd of ani- 
mals, or a posse of schoolboys. At first, however, it is indefi- 
nite, uncertain ; is shared by others of scarcely inferior power ; 
and is unaccompanied by any difference in occupation or style 
of living : the first ruler kills his own game, makes his own 
weapons, builds his own hut, and, economically considered, 
does not differ from others of his tribe. Gradually, as the 
tribe progresses, the contrast between the governing and the 
governed grows more decided. Supreme power becomes here- 
ditary in one family ; the head of that family, ceasing to pro- 
vide for his own wants, is served by others ; and he begins to 
assume the sole office of ruling. At the same time 

there has been arising a co-ordinate species of government 
— that of Religion. As all ancient records and traditions 
prove, the earliest rulers are regarded as divine personages. 
The maxims and commands they uttered during their livea 
are held sacred after their deaths, and are enforced by their 
divinely-descended successors ; who in their turns are pro- 
moted to the pantheon of the race, there tc be worshipped 
and propitiated along with their predecessors • the most an- 



844 THE .LAW OF EVOLUTION CONTINUED. 

cient of whom is the supreme god, find the rest subordinate 
gods, For a long time these connate forms of government — 
civil and religious — continue closely associated. For many 
generations the king continues to be the chief priest, and the 
priesthood to be members of the royal race. For many ages 
religious law continues to contain more or less of civil regula- 
tion, and civil law to possess more or less of religious sanc- 
tion ; and even among the most advanced nations these two 
controlling agencies are by no means completely differentiated 
from each other. Having a common root with these, 

and gradually diverging from them, we find yet another con- 
trolling agency — that of Manners or ceremonial usages. All 
titles of honour are originally the names of the god-king ; 
afterwards of God and the king ; still later of persons of high 
rank ; and finally come, some of them, to be used between 
man and man. All forms of complimentary address were at 
first the expressions of submission from prisoners to their 
conqueror, or from subjects to their ruler, either human or 
divine — expressions that were afterwards used to propitiate 
subordinate authorities, and slowly descended into ordinary 
intercourse. All modes of salutation were once obeisances 
made before the monarch and used in worship of him after 
his death. Presently others of the god-descended race were 
similarly saluted; and by degrees some of the salutations 
have become the due of all.* Thus, no sooner does the origin- 
ally homogeneous social mass differentiate into the governed 
and the governing parts, than this last exhibits an incipient 
differentiation into religious and secular — Church and State ; 
while at the same time there begins to be differentiated from 
both, that less definite species of government which rules 
our daily intercourse — a species of government which, as we 
may see in heralds' colleges, in books of the peerage, in masters 
of ceremonies, is not without a certain embodiment of its 
own. Each of these kinds of government is itself sub- 

ject to successive differentiations. In the course of ages, there 
* For detailed proof of thete assertions see essay on Maimers and Fashion. 



THE LAW OF EVOLUTION CONTINUED. 345 

arises, as among ourselves, a highly complex political organ 
tzation of monarch, ministers, lords and commons, with their 
subordinate administrative departments, courts of justice, 
revenue offices, &c, supplemented in the provinces by muni- 
ipal governments, county governments, parish or union 
governments — all of them more or less elaborated. By its 
9ide there grows up a highly complex religious organization, 
with its various grades of officials from archbishops down to 
sextons, its colleges, convocations, ecclesiastical courts, &c. ; 
to all which must be added the ever-multiplying independent 
sects, each with its general and local authorities. And at the 
same time there is developed a highly complex aggregation 
f customs, manners, and temporary fashions, enforced by 
society at large, and serving to control those minor trans- 
actions between man and man which are not regulated by 
civil and religious law. Moreover, it is to be observed that 
this ever-increasing heterogeneity in the governmental ap- 
pliances of each nation, has been accompanied by an increas- 
ing heterogeneity in the governmental appliances of different 
nations : all of which are more or less unlike in their political 
ystems and legislation, in their creeds and religious institu- 
tions, in their customs and ceremonial usages. 

Simultaneously there has been going on a second differen- 
tiation of a more familiar land ; that, namely, by which the 
mass of the community has been segregated into distinct 
classes and orders of workers. While the governing part has 
undergone the complex development above detailed, the go- 
verned part has undergone an equally complex development ; 
svhich has resulted in that minute division of labour charac- 
erizing advanced nations. It is needless to trace 

3ut this progress from its first stages, up through the caste 
li visions of the East and the incorporated guilds of Europe, 
f, the elaborate producing and distributing organization ex- 
sting among ourselves. Political economists have long since 
J indicated the evolution which, beginning with a tribe whose 
embers severally perform the same actions, each for himself 



S1G THE LAW OF EVOLUTION CONTINUED. 

ends with a civilized community whose members severally 
perform different actions for each other ; and they have fur- 
ther pointed out the changes through which the solitary pro- 
ducer of any one commodity, is transformed into a combination 
of producers who, united under a master, take separate parts 
in the manufacture of such commodity. But there 

are yet other and higher phases of this advance from tho 
homogeneous to the heterogeneous in the industrial organiz- 
ation of societ}^. Long after considerable progress has been 
made in the division of labour among the different classes of 
workers, there is still little or no division of labour among the 
widely separated parts of the community : the nation continues 
comparatively homogeneous in the respect that in each district 
the same occupations are pursued. But when roads and other 
means of transit become numerous and good, the different 
districts begin to assume different functions, and to become 
mutually dependent. The calico -manufacture locates itself in 
this county, the woollen- manufacture in that ; silks are pro- 
duced here, lace there ; stockings in one place, shoes in an- 
other ; pottery, hardware, cutlery, come to have their special 
towns ; and ultimately every locality grows more or less dis- 
tinguished from the rest by the leading occupation carried on 
in it. Nay, more, this subdivision of functions shows itself 
not only among the different parts of the same nation, but 
among different nations. That exchange of commodities 
which free-trade promises so greatly to increase, will ulti- 
mately have the effect of specializing, in a greater or less 
degree, the industry of each people. So that begin- 

ning with a barbarous tribe, almost if not quite homogeneous 
in the functions of its members, the progress has been, and 
still is, towards an economic aggregation of the whole human 
race ; growing ever more heterogeneous in respect of the 
separate functions assumed by separate nations, the separate 
functions assumed by the local sections of each nation, the 
separate functions assumed by the many kinds of makera 
and traders in each town, and the separate functions as- 



THE LAW OF EVOLUTION CONTINUED. 247 

gnmcd by the workers united in producing each com- 
modity. 

§123. ]S"ot only is the law thus clearly exemplified in the 
evolution of the social organism, but it is exemplified with 
equal clearness in the evolution of all products of human 
thought and action ; whether concrete or abstract, real or 
ideal. Let us take Language as our first illustration. 

The lowest form of language is the exclamation, by which 
an entire idea is vaguely conveyed through a single sound ; as 
among the lower animals. That human language ever con- 
sisted solely of exclamations, and so was strictly homogeneous 
in respect of its parts of speech, we have no evidence. But 
that language can be traced down to a form in which nouns 
and verbs are its only elements, is an established fact. In 
the gradual multiplication of parts of speech out of these 
primary ones — in the differentiation of verbs into active and 
passive, of noims into abstract and concrete — in the rise of 
distinctions of mood, tense, person, of number and case — in 
the formation of auxiliaiy verbs, of adjectives, adverbs, pro- 
nouns, prepositions, articles — in the divergence of thoc orders, 
genera, species, and varieties of parts of speech by which 
civilized races express minute modifications of meaning — we 
see a change from the homogeneous to the heterogeneous. 
And it may be remarked, in passing, that it is more especi- 
ally in virtue of having carried this subdivision of functions 
to a greater extent and completeness, that the English 
language is superior to all others. Another aspect 

under which we may trace the development of language, is 
the differentiation of words of allied meanings. Philology 
early disclosed the truth that in all languages words 
may be grouped into families having a common ances- 
try. An aboriginal name, applied indiscriminately to each of 
an extensive and ill-defined class of things or actions, pre- 
sently undergoes modifications by which the chief divisions 
of the class are expressed. These several names springing 



348 THE LAW OP EVOLUTION CONTINUED. 

from the primitive root, themselves become the parents of 
other names still further modified. And by the aid of those 
83 T stematie modes which presently arise, of making derivatives 
and forming compound terms expressing still smaller dis- 
tinctions, there is finally developed a tribe of words so 
heterogeneous in sound and meaning, that to the uninitiated 
it seems incredible they should have had a common origin. 
Meanwhile, from other roots there are being evolved other 
such tribes, until there results a language of some sixty 
thousand or more unlike words, signifying as many unlike 
objects, qualities, acts. Yet another way in which 

language in general advances from the homogeneous to the 
heterogeneous, is in the multiplication of languages. Whe- 
ther, as Max Miiller and Bunsen think, all languages have 
grown from one stock, or whether, as some philologists say, 
they have grown from two or more stocks, it is clear that 
since large families of languages, as the Indo-European, are 
of one parentage, they have become distinct through a pro- 
cess of continuous divergence. The same diffusion over the 
Earth's surface which has led to the differentiation of the 
race, has simultaneously led to a differentiation of their 
speech : a truth which we see further illustrated in each 
nation by the peculiarities of dialect found in separate dis- 
tricts. Thus the progress of Language conforms to the 
general law, alike in the evolution of languages, in the 
evolution of families of words, and in the evolution of parts 
of speech. 

On passing from spoken to written language, we come upon 
several classes of facts, all having similar implications. 
Written language is connate with Painting and Sculpture ; 
and at first all three are appendages of Architecture, and 
have a direct connexion with the primary form of all Govern- 
ment — the theocratic. Merely noting by the way the fact 
that sundry wild races, as for example the Australians and 
the tribes of South Africa, are given to depicting personages 
and events upon the walls of caves, which are probably re- 



THE LAW OF EVOLUTION CONTINUED. 340 

garded as sacred places, let us pass to the case of the Egyp- 
tians. Among them, as also among the Assyrians, we find 
mural paintings used to decorate the temple of the god and 
the palace of the king (which were, indeed, originally identi- 
cal) ; and as such they were governmental appliances in the 
same sense that state-pageants and religious feasts were. 
Further, they were governmental appliances in virtue of 
representing the worship of the god, the triumphs of the 
god- king, the submission of his subjects, and the punishment 
of the rebellious. And yet again they were governmental, 
as being the products of an art reverenced by the people as a 
sacred mystery. From the habitual use of this 

pictorial representation, there naturally grew up the but 
slightly-modified practice of picture-writing — a practice 
which was found still extant among the Mexicans at the time 
they were discovered. By abbreviations analogous to those 
still going on in our own written and spoken language, the 
most familiar of these pictured figures were successively 
simplified ; and ultimately there grew up a system of symbols, 
most of which had but a distant resemblance to the things 
for which they stood. The inference that the hieroglyphics 
of the Egyptians were thus produced, is confirmed by the fact 
that the picture-writing of the Mexicans was found to have 
given birth to a like family of ideographic forms ; and among 
them, as among the Egyptians, these had been partially 
differentiated into the kuriological or imitative, and the 
tropical or symbolic : which were, however, used together in 
the same record. In Egypt, written language underwent a 
further differentiation ; whence resulted the hieratic and the 
epistolographie or enchorial ; both of which are derived from 
the original hieroglyphic. At the same time we find that 
for the expression of proper names, which could not be other- 
wise conveyed, phonetic symbols were employed ; and though 
it is alleged that the Egyptians never actually achieved com- 
plete alphabetic writing, yet it can scarcely be doubted that 
these phonetic symbols occasionally used in aid of their 



S5D THE LAW OF EVOLUTION CONTINUE©. 

ideographic ones, were the germs out of which alphabetic 
writing grew. Once having become separate from hierogly- 
phics, alphabetic writing itself underwent numerous differ- 
entiations — multiplied alphabets were produced: between 
most of which, however, more or less connexion can still be 
traced. And in each civilized nation there has now grown 
up, for the representation of one set of sounds, several sets of 
written signs, used for distinct purposes. Finally, through a 
yet more important differentiation came printing ; which, uni- 
form in kind as it was at first, has since become multiform. 

§124. While written language was passing through its 
earlier stages of development, the mural decoration which 
formed its root was being differentiated into Painting and 
Sculpture. The gods, kings, men, and animals represented, 
were originally marked by indented outlines and coloured. 
In most cases these outlines were of such depth, and the 
object they circumscribed so far rounded and marked out in 
its leading parts, as to form a species of work intermediate 
between intaglio and bas-relief. In other cases we see an 
advance upon this : the raised spaces between the figures 
being chiselled off, and the figures themselves appropriately 
tinted, a painted bas-relief was produced. The restored 
Assyrian architecture at Sydenham, exhibits this style of art 
carried to greater perfection — the persons and things repre- 
sented, though still barbarously coloured, are carved out 
with more truth and in greater detail ; and in the winged 
lions and bulls used for the angles of gateways, we may see 
a considerable advance towards a completely sculptured 
figure ; which, nevertheless, is still coloured, and still forms 
part of the building. But while in Assyria the production 
of a statue proper, seems to have been little, if at all, at- 
tempted, we may trace in Egyptian art the gradual separation 
of the sculptured figure from the wall. A walk through the 
collection in the British Museum will clearly show this ; 
while it will at the same time afford an opportunity of ob. 



THE LAW OP EVOLUTION CONTINUED. 



351 



serving the evident traces which the independent statues bear 
of their derivation from bas-relief: seeing that nearly all of 
them not only display that imion of the limbs with the bodj 
which is the characteristic of bas-relief, but have the back of 
the statue united from head to foot with a block which 
stands in place of the original wall. Greece repeat- 

ed the leading stages of this progress. As in Egypt and 
Assyria, these twin arts were at first united with each other 
and with their parent, Architecture ; and were the aids of 
Religion and Government. On the friezes of Greek temples, 
we see coloured bas-reliefs representing sacrifices, battles, 
processions, games — all in some sort religious. On the pedi- 
ments we see painted sculptures more or less united with the 
tympanum, and having for subjects the triumphs of gods or 
heroes. Even when we come to statues that are definitely 
separated from the buildings to which they pertain, we still 
find them coloured ; and only in the later periods of Greek 
civilization, does the differentiation of sculpture from paint- 
ing appear to have become complete. In Christian 
art we may clearly trace a parallel re- genesis. All early 
paintings and sculptures throughout Europe, were religious 
in subject — represented Christs, crucifixions, virgins, holy 
families, apostles, saints. They formed integral parts of 
church architecture, and were among the means of exciting 
worship : as in Roman Catholic countries they still are. 
Moreover, the early sculptures of Christ on the cross, of 
virgins, of saints, were coloured ; and it needs but to call to 
mind the painted madonnas and crucifixes still abundant in 
continental churches and highways, to perceive the significant 
fact that painting and sculpture continue in closest connexion 
with each other, where they continue in closest connexion 
with their parent. Even when Christian sculpture was 
pretty clearly differentiated from painting, it was still religious 
and governmental in its subjects — was used for tombs in 
churches and statues of kings ; while, at the same time, 
painting, where not purely ecclesiastical, was applied to the 



352 THE LAW OF EVOLUTION CONTINUED. 

decoration of palaces, and besides representing royal person- 
ages, was almost wholly devoted to sacred legends. Only in 
quite recent times have painting and sculpture become 
entirely secular arts. Only within these few centuries has 
painting been divided into historical, landscape, marine, 
architectural, genre, animal, still-life, &c, and sculpture 
grown heterogeneous in respect of the variety of real and 
ideal subjects with which it occupies itself. 

Strange as it seems then, we find it no less true, that all 
forms of written language, of painting, and of sculpture, have 
a common root in the politico-religious decorations of ancient 
temples and palaces. Little resemblance as they now have, 
the bust that stands on the console, the landscape that hangs 
against the wall, and the copy of the Times lying upon the 
table, are remotely akin ; not only in nature, but by extraction. 
The brazen face of the knocker which the postman has just 
lifted, is related not only to the woodcuts of the Illustrated Lon- 
don News which he is delivering, but to the characters of the 
billet-doux which accompanies it. Between the painted window, 
the prayer-book on which its light falls, and the adjacent 
monument, there is consanguinity. The effigies on our coins, 
the signs over shops, the figures that fill every ledger, the coat 
of arms outside the carriage-panel, and the placards inside the 
omnibus, are, in common with dolls, blue-books and paper-hang- 
ings, lineally descended from the rude sculpt are-paintings in 
which the Egyptians represented the triumphs and worship 
of their god-kings. Perhaps no example can be given which 
more vividly illustrates the multiplicity and heterogeneity 
of the products that in course of time may arise by successive 
rl ifferentiations from a common stock. 

Before passing to other classes of facts, it should be observ- 
ed that the evolution of the homogeneous into the hetero- 
geneous is displayed not only in the separation of Painting 
and Sculpture from Architecture and from each other, and in 
the greater variety of subjects they embody ; but it is further 
shown in the structure of each work. A modern picture 01 



THE LAW OF EVOLUTION CONTINUED. 303 

statue is of far more heterogeneous nature than an ancient 
one. An Egyptian sculpture-fresco represents all its figures 
as on one plane — that is, at the same distance from the eye ; 
and so is less heterogeneous than a painting that represents 
them as at various distances from the eye. It exhibits all ob- 
jects as exposed to the same degree of light ; and so is less 
heterogeneous than a painting which exhibits different ob- 
jects, and different parts of each object, as in different degrees 
of light. It uses scarcely any but the primary colours, and 
these in their full intensity ; and so is less heterogeneous than 
a painting which, introducing the primary colours but sparing- 
ly, employs an endless variety of intermediate tints, each of 
heterogeneous composition, and differing from the rest not 
only in quality but in intensity. Moreover, we see 

in these earliest works a great uniformity of conception. The 
same arrangement of figures is perpetually reproduced — the 
same actions, attitudes, faces, dresses. In Egypt the modes of 
representation were so fixed that it was sacrilege to introduce 
a novelty ; and indeed it could have been only in consequence 
of a fixed mode of representation that a system of hierogly- 
phics became possible. The Assyrian bas-reliefs display par- 
allel characters. Deities, kings, attendants, winged-figures 
and animals, are severally depicted in like positions, holding 
like implements, doing like things, and with like expression or 
non-expression of face. If a palm-grove is introduced, all the 
trees are of the same height, have the same number of leaves, 
and are equidistant. When water is imitated, each wave is 
a counterpart of the rest ; and the fish, almost always of one 
kind, are evenly distributed over the surface. The beards of 
the kings, the gods, and the winged-figures, are everywhere 
similar ; as are the manes of the lions, and equally so those of 
the horses. Hair is represented throughout by one form of 
curl. The king's beard is quite architecturally built up of com- 
pound tiers of uniform curls, alternating with twisted tiers 
placed in a transverse direction, and arranged with perfect 
regularity ; and the terminal tufts of the bulls' tails are re- 



3S4 THE LAW OF EVOLUTION CONTINUED. 

presented in exactly the same manner. "Without 

tracing out analogous facts in early Christian art, in which, 
though less striking, they are still visible, the advance in 
heterogeneity will be sufficiently manifest on remembering that 
in the pictures of our own day the composition is endlessly 
varied ; the attitudes, faces, expressions, unlike ; the subor- 
dinate objects different in size, form, position, texture ; and 
more or less of contrast even in the smallest details. Or, if 
we compare an Egyptian statue, seated bolt upright on a 
block, with hands on knees, fingers outspread and parallel, 
eyes looking straight forward, and the two sides perfectly sym- 
metrical in every particular, with a statue of the advanced 
Greek or the modern school, which is asymmetrical in respect 
of the position of the head, the body, the limbs, the arrange- 
ment of the hair, dress, appendages, and in its relations to 
neighbouring objects, we shall see the change from the homo- 
geneous to the heterogeneous clearly manifested. 

§ 125. In the co-ordinate origin and gradual differentiation 
of Poetry, Music, and Dancing, we have another series of illus- 
trations. Rhythm in speech, rhythm in sound, and rhythm 
in motion, were in the beginning, parts of the same thing ; 
and have 'only in process of time become separate things. 
Among various existing barbarous tribes we find them still 
united. The dances of savages are accompanied by some kind 
of monotonous chant, the clapping of hands, the striking of 
rude instruments : there are measured movements, measured 
words, and measured tones ; and the whole ceremony, usually 
having reference to war or sacrifice, is of governmental cha- 
racter. In the early records of the historic races we similarly 
find these three forms of metrical action united in religious 
festivals. In the Hebrew writings we read that the triumphal 
ode composed by Moses on the defeat of the Egyptians, was 
sung to an accompaniment of dancing and timbrels. The 
Israelites danced and sung " at the inauguration of the golden 
calf. And as it is generally agreed that this representation 



TIIE LAW OP EVOLUTION CONTINUED. 355 

of the Deity was borrowed from tlie mysteries of Api3, it is 
probable that the dancing was copied from that of the Egyp- 
tians on those occasions.' ' There was an annual dance in 
Shiloh on the sacred festival ; and David danced before the 
ark. Again, in Greece the like relation is everywhere seen : 
the original type being there, as probably in other cases, a 
simultaneous chanting and mimetic representation of the life 
and adventures of the god. The Spartan dances were ac- 
companied by hymns and songs ; and in general the Greeks 
had " no festivals or religious assemblies but what were ac- 
companied with songs and dances " — both of them being 
forms of worship used before altars. Among the Romans, 
too, there were sacred dances : the Salian and Lupercalian 
Deing named as of that kind. And even in Christian countries, 
is at Limoges in comparatively recent times, the people have 
danced in the choir in honour of a saint. The in- 

cipient separation of these once united arts from each other 
and from religion, was early visible in Greece. Probably 
diverging from dances partly religious, partly warlike, as the 
Corybantian, came the war-dances proper, of which there 
were various kinds ; and from these resulted secular dances. 
Meanwhile Music and Poetry, though still united, came to 
have an existence separate from dancing. The aboriginal 
Greek poems, religious in subject, were not recited but 
chanted ; and though at first the chant of the poet was ac- 
companied by the dance of the chorus, it ultimately grew 
into independence. Later still, when the poem had been 
dilfercntiated into epic and lyric — when it became the custom 
to sing the lyric and recite the epic — poetry proper was born. 
As during the same period musical instruments were being 
multiplied, we may presume that music came to have an exist- 
ence apart from words. And both of them were beginning 
to assume other forms besides the religious. Facts 

having like implications might be cited from the histories of 
later times and peoples ; as the practices of our own early 
minstrels, who sang to the harp heroic narratives versified 



856 THE LAW OF EVOLUTION CONTINUED. 

by themselves to music of their own composition : thus 
uniting the now separate offices of poet, composer, vocalist, 
and instrumentalist. But, without further illustration, the 
common origin and gradual differentiation of Dancing, Poetry, 
and Music will be sufficiently manifest. 

The advance from the homogeneous to the heterogeneous 
is displayed not only in the separation of these arts from 
each other and from religion, but also in the multiplied 
differentiations which each of them afterwards undergoes. 
Not to dwell upon the numberless kinds of dancing that 
have, in course of time, come into use ; and not to occupy 
space in detailing the progress of poetry, as seen in the de- 
velopment of the various forms of metre, of rhyme, and of 
general organization ; let us confine our attention to music 
as a type of the group. As argued by Dr .Burney, 

and as implied by the customs of still extant barbarous races, 
the first musical instruments were, without doubt, percussive 
— .sticks, calabashes, tom-toms — and were used simply to 
mark the time of the dance ; and in this constant repeti- 
tion of the same sound, we see music in its most homo- 
geneous form. The Egyptians had a lyre with three 
strings. The early lyre of the Greeks had four, constituting 
their tetrachord. In course of some centuries lyres of seven 
and eight strings were employed. And, by the expiration of 
a thousand years, they had advanced to their " great system " 
of the double octave. Through all which changes there of 
course arose a greater heterogeneity of melody. Simulta- 
neously there came into use the different modes — Dorian, 
Ionian, Phrygian, iEolian, and Lydian — answering to our 
keys : and of these there were ultimately fifteen. As yet, 
nowever, there was but little heterogeneity in the time of 
their music. Instrumental music during this period being 
merely the accompaniment of vocal music, and vocal music 
being completely subordinated to words, — the singer being 
also the poet, chanting his own compositions and making the 
lengths of his notes agree with the feet of his verses ; there 



THE LAW OF EVOLUTION CONTINUED. 857 

unavoidably arose a tiresome uniformity of measure, which, 
as Dr Burney says, " no resources of melody could disguise." 
Lacking the complex rhythm, obtained by our equal bars and 
unequal notes, the only rhythm was that produced by the 
quantity of the syllables, and was of necessity comparatively 
monotonous. And further, it may be observed that the chant 
thus resulting, being like recitative, was much less clearly 
differentiated from ordinary speech than is our modern song, 
Nevertheless, considering the extended range of notes in use, 
the variety of modes, the occasional variations of time conse- 
quent on changes of metre, and the multiplication of instru- 
ments, we see that music had, towards the close of Greek 
civilization, attained to considerable heterogeneity: not in- 
deed as compared with our music, but as compared with that 
which preceded it. As yet, however, there existed 

nothing but melody : harmony was unknown. It was not 
until Christian church-music had reached some development, 
that music in parts was evolved ; and then it came into exist- 
ence through a very unobtrusive differentiation. Difficult as 
it may be to conceive, a priori, how the advance from melody 
to harmony could take place without a sudden leap, it is none 
the less true that it did so. The circumstance which prepared 
the way for it, was the employment of two choirs singing al- 
ternately the same air. Afterwards it became the practice 
(very possibly first suggested by & mistake) for the second 
choir to commence before the first had ceased ; thus producing 
a fugue. "With the simple airs then in use, a partially har- 
monious fugue might not improbably thus result ; and a very 
partially harmonious fugue satisfied the cars of that age, as 
we know from still preserved examples. The idea having 
once been given, the composing of airs productive of fugal 
harmony would naturally grow up ; as in some way it did 
grow up out of this alternate choir-singing. And from the 
fugue to concerted music of two, three, four, and more parts, 
the transition was easy "Without pointing out in 

detail the increasing complexity that resulted from introducing 



358 THE LAW OF EVOLUTION CONTINUED. 

notes of various lengths, from the multiplication of keys> 
from the use of accidentals, from varieties of time, from mo- 
dulations and so forth, it needs but to contrast music as it is, 
with music as it was, to see how immense is the increase of 
heterogeneity. We see this if, looking at music in its ensem- 
ble, we enumerate its many different genera and species — if 
we consider the divisions into vocal, instrumental, and mixed ; 
and their subdivisions into music for different voices and dif- 
ferent instruments — if we observe the many forms of sacred 
music, from the simple hymn, the chant, the canon, motet, 
anthem, &c, up to the oratorio ; and the still more numerous 
forms of secular music, from the ballad up to the serenata, 
from the instrumental solo up to the symphony. Again, the 
same truth is seen on comparing any one sample of aboriginal 
music with a sample of modern music — even an ordinary 
song for the piano ; which we find to be relatively highly 
heterogeneous, not only in respect of the varieties in the pitch 
and in the length of the notes, the number of different notes 
sounding at the same instant ^in company with the voice, and 
the variations of strength with which they are sounded and 
sung, but in respect of the changes of key, the changes of 
time, the changes of timbre of the voice, and the many other 
modifications of expression. While between the old mono- 
tonous dance-chant and a grand opera of our own day, with 
its endless orchestral complexities and vocal combinations, 
the contrast in heterogeneity is so extreme that it seems 
scarcely credible that the one should have been the ancestor of 
the other. 

§126. Were they needed, many farther illustrations m'ght 
be cited. Going back to the early time when the deeds of the 
god-king, chanted and mimetically represented in dance! 
round his altar, were further narrated in picture-writings on 
the walls of temples and palaces, and so constituted a rude 
literature, we might trace the development of Literature 
through phases in which, as in the Hebrew Scriptures, it pre- 



HIE LAW OF EVOLUTION CONTINUED. . 359 

sents in one work, theology, cosmogony, history, biography, 
civil law, ethics, poetry ; through other phases in which, as in 
the Iliad, the religious, martial, historical, the epic, dramatic, 
and lyric elements are similarly commingled ; down to its pre-? 
:nt heterogeneous development, in which its divisions and 
subdivisions are so numerous and varied as to defy complete 
classification. Or we might track the evolution of Science : 
beginning with the era in which it was not yet differentiated 
from Art, and was, in union with Art, the handmaid of Re- 
ligion ; passing through the era in which the sciences were so 
few and rudimentary, as to be simultaneously cultivated by 
the same philosophers ; and ending with the era in which the 
genera and species are so numerous that few can enumerate 
them, and no one can adequately grasp even one genus. Or 
we might do the like with Architecture, with the Drama, with 
Dress. But doubtless the reader is already weary of illustra- 
tions ; and my promise has been amply fulfilled. I believe it 
has been shown beyond question, that that which the German 
physiologists have found to be a law of organic develop- 
ment, is a law of all development. The advance from tho 
simple to the complex, through a process of successive 
differentiations, is seen alike in the earliest changes of the 
Universe to which we can reason our way back, and in the 
earliest changes which we can inductively establish ; it is 
seen in the geologic and climatic evolution of the Earth, and 
of every single organism on its surface; it is seen in the 
evolution of Humanity, whether contemplated in the civil- 
ized individual, or in the aggregations of races ; it is seen in 
;be evolution of Society, in respect alike of its political, its 
religious, and its economical organization ; and it is seen iu 
the evolution of all those endless concrete and abstract pro- 
ducts of human activity, which constitute the environment 
of our daily life. From the remotest past which Science can 
fathom, up to the novelties of yesterday, an essential trait of 
Evolution has been the transformation of the homogeneous 
into the heterogeneous. 



860 THE LAW OP EVOLUTION CONTINUED. 

§ 127. Hence the general formula arrived at in the last 
chapter needs supplementing. It is true that Evolution, 
under its primary aspect, is a change from a less coherent 
form to a more coherent form, consequent on the dissipation 
of motion and integration of matter; but this is by no means 
the whole truth. Along with a passage from the coherent 
to the incoherent, there goes on a passage from the uniform 
to the multiform. Such, at least, is the fact wherever Evolu- 
tion is compound; which it is in the immense majority of 
cases. While there is a progressing concentration of the 
aggregate, either by the closer approach of the matter 
within its limits, or by the drawing in of further matter, or 
by both; and while the more. or less distinct parts into 
which the aggregate divides and sub-divides are severally con- 
centrating; these parts are also becoming unlike — unlike in 
size, or in form, or in texture, or in composition, or in several 
or all of these. The same process is exhibited by the whole 
and by its members. The entire mass is integrating, and 
simultaneously differentiating from other masses ; and each 
member of it is also integrating and simultaneously differen- 
tiating from other members. 

Our conception, then, must unite these characters. As 
we now understand it, Evolution is definable as a change 
from an incoherent homogeneity to a coherent heterogeneity, 
accompanying the dissipation of motion and integration of 
matter. 



CHAPTER XVI. 

THE LAW OF EVOLUTION CONTINUED 

§ 128. But now, does this generalization express the 
whole truth ? Does it include everything essentially cha- 
racterizing Evolution and exclude everything else ? Does 
it comprehend all the phenomena of secondary re- distribution 
which Compound Evolution presents, without comprehend- 
ing any other phenomena ? A critical examination of tho 
facts will show that it does neither. 

Changes from the less heterogeneous to the more hetero- 
geneous, which do not come within what we call Evolution, 
occur in every local disease. A portion of the body in which 
there arises a morbid growth, displays a new differentiation. 
Whether this morbid growth be, or be not, more hetero- 
geneous than the tissues in which it is seated, is not the 
question. The question is, whether the organism as a whole 
is, or is not, rendered more heterogeneous by the addition 
of a part unlike every pre-existing part, in form, or com- 
position, or both. And to this question there can be none 
but an affirmative answer. Again, it may be con- 

tended that the earlier stages of decomposition in a dead 
body involve increase of heterogeneity. Supposing the 
chemical changes to commence in some parts sooner than in 
other parts, as they commonly do ; and to affect different 
tissues in different ways, as they must; it seems to be a 
necessary admission that the entire body, made up of unde- 
composed parts and parts decomposed in various modes and 
17 



362 THE LAW OP EVOLUTION CONTINUED. 

degrees, has become more heterogeneous than it was. 
Though greater homogeneity will be the eventual result, the 
immediate result is the opposite. And yet this immediate 
result is certainly not Evolution. Other instances 

are furnished by social disorders and disasters. A rebellion, 
which, while leaving some provinces undisturbed, develops 
itself here in secret societies, there in public demonstrations, 
and elsewhere in actual conflicts, necessarily renders the 
society, as a whole, more heterogeneous. Or when a dearth 
causes commercial derangement with its entailed bank- 
ruptcies, closed factories, discharged operatives, food-riots, 
incendiarisms; it is manifest that, as a large part of the 
community retains its ordinary organization displaying the 
usual phenomena, these new phenomena must be regarded 
as adding to the complexity previously existing. But such 
changes, so far from constituting further Evolution, are steps 
towards Dissolution. 

Clearly, then, the definition arrived at in the last chapter 
is an imperfect one. The changes above instanced as coming 
within the formula as it now stands, are so obviously unlike 
the rest, that the inclusion of them implies some distinction 
hitherto overlooked. Such further distinction we have now 
to supply. 

§ 129. At the same time that Evolution is a change from 
the homogeneous to the heterogeneous, it is a change from 
the indefinite to the definite. Along with an advance from 
simplicity to complexity, there is an advance from confusion 
to order — from undetermined arrangement to determined 
arrangement. Development, no matter of what kind, 
exhibits not only a multiplication of unlike parts, but an 
increase in the distinctness with which these parts ar6 
marked off from one another. And this is the distinction 
sought. For proof, it needs only to re-consider the 

instances given above. The changes constituting disease, 
have no such definiteness, either in locality, extent, or 



THE LAW OP EVOLUTION CONTINUED. 363 

outline, as the changes constituting development. Though 
certain morbid growths are more common in some parts of 
the body than in others (as warts on the hands, cancer on 
the breasts, tubercle in the lungs), yet they are not con- 
fined to these parts; nor, when found on them, are they 
anything like so precise in their relative positions as are 
the normal parts around them. Their sizes are extremely 
variable : they bear no such constant proportions to the 
body as organs do. Their forms, too, are far less specific 
than organic forms. And they are extremely confused in 
their internal structures. That is, they are in all respects 
comparatively indefinite. The like peculiarity 

may be traced in decomposition. That total indefiniteness 
to which a dead body is finally reduced, is a state towards 
which the putrefactive changes tend from their commence- 
ment. The advancing destruction of the organic com- 
pounds, blurs the minute structure — diminishes its dis- 
tinctness. From the portions that have undergone most 
decay, there is a gradual transition to the less decayed 
portions. And step by step the lines of organization, 
once so precise, disappear. Similarly with social 

changes of an abnormal kind. The disaffection which 
initiates a political outbreak, implies a loosening of those 
ties by which citizens are bound up into distinct classes 
and sub-classes. Agitation, growing into revolutionary 
meetings, fuses ranks that are usually separated. Acts of 
insubordination break through the ordained limits to indi- 
vidual conduct ; and tend to obliterate the lines previously 
existing between those in authority and those beneath 
them. At the same time, by the arrest of trade, artizans 
and others lose then* occupations ; and in ceasing to be 
functionally distinguished, merge into an indefinite mass. 
And when at last there comes positive insurrection, all 
magisterial and official powers, all class distinctions, and 
all industrial differences, cease : organized society lapses 
into an unorganized aggregation of social units. Similarly, 



364 THE LAW OF EVOLUTION CONTINUED. 

in so far as famines and pestilences canse changes from 
order towards disorder, they cause changes from definite 
arrangements to indefinite arrangements. 

Thus, then, is that increase of heterogeneity which con- 
stitutes Evolution, distinguished from that increase of 
heterogeneity which does not do so. Though in disease 
and death, individual or social, the earliest modifications 
are additions to the pre-existing heterogeneity, they are 
not additions to the pre-existing definiteness. They begin 
from the very outset to destroy this definiteness; and 
gradually produce a heterogeneity that is indeterminate 
instead of determinate. As a city, already multiform in its 
variously-arranged structures of various architecture, may 
be made more multiform by an earthquake, which leaves 
part of it standing and overthrows other parts in different 
ways and degrees, but is at the same time reduced from 
orderly arrangement to disorderly arrangement ; so may 
organized bodies be made for a time more multiform by 
changes which are nevertheless disorganizing changes. 
And in the one case as in another, it is the absence of 
definiteness which distinguishes the multiformity of regres- 
sion from the multiformity of progression. 

If advance from the indefinite to the definite is an 
essential characteristic of Evolution, we shall of course find 
it everywhere displayed; as in the last chapter we found 
the advance from the homogeneous to the heterogeneous. 
With a view of seeing whether it is so, let us now re- con- 
sider the same several classes of facts. 

§ 130. Beginning, as before, with a hypothetical illustra- 
tion, we Lave to note that each step in the evolution of tho 
Solar System, supposing it to have originated from diffused 
matter, was an advance towards more definite structure. 
At first irregular in shape and with indistinct margin, the 
attenuated substance, as it concentrated and began to rotate, 
must have assumed the form of an oblate spheroid, which, 



THE LAW OF EVOLUTION JONTIXUED. 3G5 

with every increase of density, became more specific in out- 
line, and had its surface more sharply marked off from the 
surrounding void. Simultaneously, the constituent por- 
tions of nebulous matter, instead of moving independently 
towards their common centre of gravity from all points, 
and revolving round it in various planes, as they would at 
first do, must have had these planes more and more merged 
into 2. single plane, that became less variable as the concen- 
tration progressed — became gradually defined. 

According to tli3 hypothesis, change from indistinct cha- 
racters to distinct ones, was repeated in the evolution of 
planets and satellites; and may in them be traced much 
further. A gaseous spheroid is less definitely limited than 
a fluid spheroid, since it is subject to larger and more rapid 
undulations of surface, and to much greater distortions of 
general form ; and, similarly, a liquid spheroid, covered as it 
must be with waves of various magnitudes, is less definite 
than a solid spheroid. The decrease of oblateness that goes 
along with increase of integration, brings relative definite- 
ness of other elements. A planet having an axis inclined 
to the plane of its orbit, must, while its form is very 
oblate, have its plane of rotation much disturbed by the 
attraction of external bodies ; whereas its approach to a 
spherical form, involving a smaller precessional motion, 
involves less marked variations in the direction of its axis. 

With progressing settlement of the space-relations, the 
force-relations simultaneously become more settled. The 
exact calculations of physical astronomy, show us how defi- 
nite these force-relations now are ; while their original 
indefiniteness is implied in the extreme difficulty, if not/ 
impossibility, of subjecting the nebular hypothesis to mathe- 
matical treatment. 

§ 131. From that primitive m«ltcn state of the Earth 
inferable from geological data — a state accounted for by the 
nebular hypothesis but inexplicable on any other — the 



SG6 THE LAW OF EVOLUTION CONTINUED. 

transition to its existing state has been through stages in 
which the characters "became more determinate. Besides 
being comparatively unstable in surface and contour, a liquid 
spheroid is less specific than a solid spheroid in having no 
fixed distribution of parts. Currents of molten matter, 
though kept to certain general circuits by the conditions of 
equilibrium, cannot, in the absence of solid boundaries, be 
precise or permanent in their directions : all parts must be 
in motion with respect to other parts. But a superficial 
solidification, even though partial, is manifestly a step 
towards the establishment of definite relations of position. 
In a thin crust, however, frequently ruptured by disturbing 
forces, and moved by every tidal undulation, fixity of re- 
lative position can be but temporary. Only as the crust 
thickens, can there arise distinct and settled geographical 
relations. Observe, too, that when, on a surface 

that has cooled to the requisite degree, there begins to pre- 
cipitate the water floating above as vapour, the deposits 
cannot maintain any definiteness either of state or place. 
Falling on a solid envelope not thick enough to preserve 
anything beyond slight variations of level, the water must 
form shallow pools over areas sufficiently cool to permit con- 
densation ; which areas must pass insensibly into others that 
are too hot for this, and must themselves from time to time 
be so raised in temperature as to drive off the water lying 
on them. With progressing refrigeration, however, — with 
a growing thickness of crust, a consequent formation of 
larger elevations and depressions, and the precipitation of 
more atmospheric water, there comes an arrangement of 
parts that is comparatively fixed in both time and space ; 
and the definiteness of state and position increases, until 
there results such a distribution of continents and oceans 
as we now see — a distribution that is not only topographi- 
cally precise, but also in its cliff-marked coast-lines presents 
divisions of land from water more definite than could have 
existed when all the uncovered areas were low islands with 



THE LAW OP EVOLUTION CONTINUED. 367 

shelving beaches, over which the tide ebbed and flowed to 
great distances. 

Respecting the characteristics classed as geological, we 
may draw parallel inferences. While the Earth's crust was 
thin, mountain-chains were impossibilities : there could not 
have been long and well-defined axes of elevation, with 
distinct water-sheds and areas of drainage. Moreover, the 
denudation of small islands by small rivers, and by tidal 
streams both feeble and narrow, would produce no clearly- 
marked sedimentary strata. Confused and varying masses 
of detritus, such as we now find at the mouths of brooks, 
must have been the prevailing formations. And these could 
give place to distinct strata, only as there arose continents 
and oceans, with their great rivers, long coast-lines, and 
wide- spreading marine currents. 

How there must simultaneously have resulted more de- 
finite meteorological characters, need not be pointed out in 
detail. That differences of climates and seasons grew 
relatively decided as the heat of the Sun became distin- 
guishable from the proper heat of the Earth ; and that 
the production of more specific conditions in each locality 
was aided by increasing permanence in the distribution of 
lands and seas ; are conclusions sufficiently obvious. 

§ 132. Let us turn now to the evidence furnished by 
organic bodies. In place of deductive illustrations like the 
foregoing, we shall here find numerous illustrations which 
have been inductively established, and are therefore less 
open to criticism. The process of mammalian development, 
for example, will supply us with numerous proofs ready- 
described by embryologists. 

The first change which the ovum of a mammal undergoes 
after continued segmentation has reduced its yelk to a mul- 
berry-like mass, is the appearance of a greater definiteness 
in the peripheral cells of this mass ; each of which acquires 
a distinct enveloping membrane. These peripheral cells, 



368 THE LAW OF EVOLUTION CONTINUED. 

vaguely distinguished from the internal ones by their 
minuter sub-division as well as by their greater complete- 
ness, coalesce to form the blastoderm or germinal mem- 
brane. Presently, one portion of this membrane is ren- 
dered unlike the rest by the accumulation of cells still 
more sub-divided, which, together, form an opaque 
roundish spot. This area germinativa, as it is called, 
shades off gradually into the surrounding parts of the 
blastoderm; and the area pellucida, subsequently formed 
in the midst of it, is similarly without precise margin. 
The (C primitive trace," which makes its appearance in the 
centre of the area pellucicla, and is the rudiment of that 
vertebrate axis which is to be the fundamental character- 
istic of the mature animal, is shown by its name to be 
at first indefinite — a mere trace. Beginning as a shallow 
groove, it becomes slowly more pronounced: its sides 
grow higher ; their summits overlap, ' and at last unite ; 
and so the indefinite groove passes into a definite tube, 
forming the vertebral canal. In this vertebral canal the 
leading divisions of the brain are at first discernible only 
as slight bulgings ; - while the vertebras commence as 
indistinct modifications of the tissue bounding the canal. 
Simultaneously, the outer surface of the blastoderm has 
been differentiating from the inner surface : there has 
arisen a division into the serous and mucous layers — a 
division at the outset indistinct, and traceable only 
about the germinal area, but which insensibly spreads 
throughout nearly the whole germinal membrane, and 
becomes definite. From the mucous layer, the develop- 
ment of the alimentary canal proceeds as that of the 
vertebral canal does from the serous layer. Originally a 
simple channel along the under surface of the embryonic 
mass, the intestine is rendered distinct by the bending 
down, on each side, of ridges which finally join to form a 
tube — the permanent absorbing surface is by degrees cut off 
from that temporary absorbing surface with which it was 



TIIE LAW OP EVOLUTION CONTINUED. CG9 

continuous and uniform. And in an analogous manner 
the entire embryo, which at first lies outspread on the 
yelk-sack, gradually rises up from it, and by the infold- 
ing of its ventral region, becomes a separate mass, con- 
nected with the yelk-sack only by a narrow duct. 

These changes through which the general structure is 
marked out with slowly-increasing precision, are paralleled 
in the evolution of each organ. The heart begins as a 
mere aggregation of cells, of which the inner liquefy to 
form blood, while the outer are transformed into the 
walls; and when thus sketched out, the heart is indefinite 
not only as being unlined by limiting membrane, but also 
as being little more than a dilatation of the central blood- 
vessel. By and by the receiving portion of the cavity 
becomes distinct from the propelling portion. Afterwards 
there begins to grow across the ventricle, a septum, which 
is, however, some time before it shuts off the two halves 
from each other ; while the later-formed septum of the 
auricle remains incomplete during the whole of foetal 
life. Again, the liver commences by multipli- 

cation of certain cells in the wall of the intestine. The 
thickening produced by this multiplication " increases so 
as to form a projection upon the exterior of the canal ; M 
and at the same time that the organ grows and becomes 
distinct from the intestine, the channels running through 
it are transformed into ducts having clearly-marked walls. 
Similarly, certain cells of the external coat of the alimentary 
canal at its upper portion, accumulate into lumps or buds 
from which the lungs are developed; and these, in their 
general outlines and detailed structure, acquire distinctness 
step by step. 

Changes of this order continue long after birth ; and, 
in the human being, are some of them not completed 
till middle life. Daring youth, most of the articular 
surfaces of the bones remain rough and fissured — the cal- 
careous deposit ending irregularly in the surrounding carti- 



370 



THE LAW OF EVOLUTION CONTINUED. 



lage. But between puberty and the age of thirty, these 
articular surfaces are finished off into smooth, hard, sharply- 
cut "epiphyses." Generally, indeed, we may say that in- 
crease of definiteness continues when there has ceased 
to be any appreciable increase of heterogeneity. And 
there is reason to think that those modifications which 
take place after maturity, bringing about old age and 
death, are modifications of this nature; since they cause 
rigidity of structure, a consequent restriction of move- 
ment and of functional pliability, a gradual narrowing of 
the limits within which the vital processes go on, ending 
in an organic adjustment too precise — too narrow in its 
margin of possible variation to permit the requisite adapta- 
tion to changes of external conditions. 

§ 133. To prove that the Earth's Flora and Fauna, 
regarded either as wholes or in their separate species, have 
progressed in definiteness, is no more possible than it was 
to prove that they have progressed in heterogeneity : lack 
of facts being an obstacle to the one conclusion as to the other. 
If, however, we allow ourselves to reason from the hypothesis, 
now daily rendered more probable, that every species up to 
the most complex, has arisen out of the simplest through 
the accumulation of modifications upon modifications, just 
as every individual arises; we shall see that there must 
have been a progress from the indeterminate to the deter- 
minate, both in the particular forms and in the groups of 
forms. 

~VVe may set out with the significant fact that the lowest 
organisms (which are analogous in structure to the germs 
of all higher ones) have so little definiteness of character 
that it is difficult, if not impossible, to decide whether they 
are plants or animals. Respecting sundry of them there are 
unsettled disputes between zoologists and botanists ; and it 
is proposed to group them into a separate kingdom, forming 
a common basis to the animal and vegetal kingdoms. Note 



THE LAW OP EVOLUTION CONTINUED. 371 

next tliat among the Protozoa, extreme indefiniteness of shapo 
is general. In sundry shell-less Khizopods the form is so 
irregular as to admit of no description; and it is neither 
alike in any two individuals nor in the same individual at 
successive moments. By aggregation of such creatures, are 
produced, among other indefinite bodies, the Sponges — 
bodies that are indefinite in size, in contour, in internal 
arrangement. As further showing how relatively indeter- 
minate are the simplest organisms, it may be mentioned 
that their structures vary greatly with surrounding con- 
ditions : so much so that, among the Protozoa and Pro- 
topliyta, many forms which were once classed as distinct 
species, and even as distinct genera, are found to be merely 
varieties of one species. If now we call to mind 

how precise in their attributes are the highest organisms — 
how sharply cut their outlines, how invariable their pro- 
portions, and how comparatively constant their structures 
under changed conditions ; we cannot deny that greater 
definiteness is one of their characteristics. We must admit 
that if they have been evolved out of lower organisms, an 
increase of definiteness has been an accompaniment of their 
evolution. 

That, in course of time, species have become more sharply 
marked off from other species, genera from genera, and 
orders from orders, is a conclusion net admitting of a more 
positive establishment than the foregoing ; and must, 
indeed, stand or fall with it. If, however, species and 
genera and orders have arisen by " natural selection," then, 
as Mr. Darwin shows, there must have been a tendency to 
divergence, causing the contrasts between groups to 
become greater. Disappearance of intermediate forms, 
less fitted for special spheres of existence than the ex- 
treme forms they connected, must have made the 
differences between the extreme forms decided; and so, 
from indistinct and unstable varieties, must slowly have 
been produced distinct and stable species — an inference 



372 THE LAW OP EVOLUTION CONTINUED. 

which is in harmony with what we know respecting races 
of men and races of domestic animals. 

§ 134. The successive phases through which societies 
pass, very obviously display the progress from indeter- 
minate arrangement to determinate arrangement. A wan- 
dering tribe of savages, being fixed neither in its locality 
nor in its internal distribution, is far less definite in the 
relative positions of its parts than a nation. In such a tribe 
the social relations are similarly confused and unsettled. 
Political authority is neither well established nor precise. 
Distinctions of rank are neither clearly marked nor im- 
passable. And save in the different occupations of men and 
women, there are no complete industrial divisions. Only 
in tribes of considerable size, which have enslaved other 
tribes, is the economical differentiation decided. 

Any one of these primitive societies, however, that evolves, 
becomes step by step more specific. Increasing in size, 
consequently ceasing to be so nomadic, and restricted In 
its range by neighbouring societies, it acquires, after pro- 
longed border warfare, a settled territorial boundary. The 
distinction between the royal race and the people, eventually 
amounts in the popular apprehension to a difference of 
nature. The warrior-class attains a* perfect separation from 
classes devoted to the cultivation of the soil, or other 
occupations regarded as servile. And there arises a 
priesthood that is defined in its rank, its functions, its 
privileges. This sharpness of definition, growing 

both greater and more variously exemplified as societies 
advance to maturity, is extremest in those that have 
reached their full development or are declining. Of 
ancient Egypt we read that its social divisions were precise 
and its customs rigid. Recent investigations make it more 
than ever clear, that among the Assyrians and surrounding 
peoples, not only were the laws unalterable, but even the 
minor habits, down to those of domestic routine, posseso&d 



THE LAW Of EVOLUTION CONTINUED. 01 

a sacTedness which insured their permanence. In India at 
the present day, the unchangeable distinctions of caste, 
not less than the constancy in modes of dress, industrial 
processes, and religious observances, show us how fixed are 
the arrangements where the antiquity is great. Nor does 
China, with its long-settled political organization, its elabo- 
rate and precise conventions, and its unprogressive lite- 
rature, fail to exemplify the same truth. 

The successive phases of our own and adjacent societies, 
furnish facts somewhat different in kind but similar in mean- 
ing. Originally, monarchical authority was more baronial, 
and baronial authority more monarchical, than afterwards. 
Between modern priests and the priests of old times, who 
while officially teachers of religion were also warriors, 
judges, architects, there is a marked difference in defi- 
niteness of function. And among the people engaged in 
productive occupations, the like contrasts would be found 
to hold : the industrial class has become more distinct 
from the military; and its various divisions from one 
another. A history of our constitution, reminding 

us how the powers of King, Lords, and Commons, have 
been gradually settled, would clearly exhibit analogous 
changes. Countless facts bearing the like construction, 
would meet us were we to trace the development of legis- 
lation; in the successive stages of which, we should find 
statutes gradually rendered more specific in their appli- 
cations to particular cases. Even now we see that each 
new law, beginning as a vague proposition, is, in the course 
of enactment, elaborated into specific clauses ; and further 
that only after its interpretation has been established by 
judges' decisions in courts of justice, does it reach its final 
definiteness. From the annals of minor institu- 

tions like evidence may be gathered. Religious, charitable, 
literary, and all other societies, starting with ends and 
methods roughly sketched out and easily modifiable, show us 
how, by the accumulation of rules and precedents, the pur- 



Ota THE LAW OF EVOLUTION CONTINUED. 

poses become more distinct and the modes of action more 
restricted ; until at last decay follows a fixity which admits 
of no adaptation to new conditions. Should it be objected 
that among civilized nations there are examples of de- 
creasing definiteness, (instance the breaking down of limits 
between ranks,) the reply is, that such apparent exceptions 
are the accompaniments of a social metamorphosis — a 
change from the military or predatory type of social 
structure, to the industrial or mercantile type, during which 
the old lines of organization are disappearing and the new 
ones becoming more marked. 

§ 135. All organized results of social action — all super- 
organic structures, pass through parallel phases. Being, as 
they are, objective products of subjective processes, they 
must display corresponding changes ; and that they do this, 
the cases of Language, of Science, of Art, clearly prove. 

Strike out from our sentences everything but nouns and 
verbs, and there stands displayed the vagueness charac- 
terizing undeveloped tongues. When we note how each 
inflection of a verb, or addition by which the case of a noun 
is marked, serves to limit the conditions of action or of ex- 
istence, we see that these constituents of speech enable men 
to communicate their thoughts more precisely. That the 
application of an adjective to a noun or an adverb to a verb, 
narrows the class of things or changes indicated, implies 
that the additional word serves to make the proposition 
more distinct. And similarly with other parts of speech. 

The like effect results from the multiplication of words of 
each order. When the names for objects, and acts, and 
qualities, are but few, the range of each is proportionately 
wide, and its meaning therefore unspecific. The similes and 
metaphors so much used by aboriginal races, indirectly 
and imperfectly suggest ideas, which they cannot express 
directly and perfectly from lack of words. Or to take a 
case from ordinary life, if we compare the speech of the 



THE LAW OP EVOLUTION CONTINUED. 375 

peasant, who, out of his limited vocabulary, can describe 
the contents of the bottle he carries, only as " doctor's- 
stuff " which he has got for his " sick " wife, with the 
speech of the physician, who tells those educated like 
himself the particular composition of the medicine, and the 
particular disorder for which he has prescribed it ; we have 
vividly brought home to us, the precision which language 
gains by the multiplication of terms. 

Again, in the course of its evolution, each tongue acquires 
a further accuracy through processes which fix the meaning 
of each word. Intellectual intercourse slowly diminishes 
laxity of expression. By and by dictionaries give defini- 
tions. And eventually, among the most cultivated, inde- 
finiteness is not tolerated, either in the terms used or in their 
frrammatical combinations. 

Once more, languages considered as wholes, become 
gradually more sharply marked off from one another, and 
from their common parent : as witness in early times the 
divergence from the same root of two languages so unlike 
as Greek and Latin, and in later times the development of 
three Latin dialects into Italian, French, and Spanish. 

§ 136. In his " History of the Inductive Sciences," Dr. 
Wliewell says that the Greeks failed in physical philosophy 
because their " ideas were not distinct, and appropriate to 
the facts." I do not quote this remark for its luminous- 
ness ; since it would be equally proper to ascribe the 
indistinctness and inappropriateness of their ideas to the 
imperfection of their physical philosophy ; but I quote it 
because it serves as good evidence of the indefinitcness of 
primitive science. The same work and its fellow on u The 
Philosophy of the Inductive Sciences," supply other evi- 
dences equally good, because equally independent of any 
such hypothesis as is here to be established. Eespecting 
mathematics, we have the fact that geometrical theorems 
grew out of empirical methods ; and that these theorems, at 



376 THE LAW OF EVOLUTION CONTINUED. 

firsb isolated, did not acquire the clearness whicli complete 
demonstration gives, until they were arranged by Euclid 
into a series of dependent propositions. At a later period, 
the same general truth was exemplified in the progress 
from the "method of exhaustions" and the "method of 
indivisibles " to the ' c method of limits ; " which is the 
central idea of the infinitesimal calculus. In early 

mechanics, too, may be traced a dim perception that action 
and re-action are equal and opposite ; though, forages after, 
this truth remained unformulated. And similarly, the 
property of inertia, though not distinctly comprehended 
until Kepler lived, was vaguely recognized long previously. 
" The conception of statical force," " was never presented 
in a distinct form till the works of Archimedes appeared ; " 
and " the conception of accelerating force was confused, in 
the mind of Kepler and his contemporaries, and did not 
become clear enough for purposes of sound scientific reason- 
ing before the succeeding century." To which specific asser- 
tions may be added the general remark, that " terms which 
originally, and before the laws of motion were fully known, 
were used in a very vague and fluctuating sense, were 
afterwards limited and rendered precise." When 

we turn from abstract scientific conceptions to the con- 
crete previsions of science, of which astronomy furnishes 
numerous examples, a like contrast is visible. The times 
at which celestial phenomena will occur, have been predicted 
with ever-increasing accuracy. Errors once amounting to 
days are now diminished to seconds. The correspondence 
between the real and supposed forms of orbits, has been 
gradually rendered more precise. Originally thought circular, 
then epicyclical, then elliptical, orbits are now ascertained to 
be curves which always deviate from perfect ellipses, and 
are ever undergoing changes. 

But the general advance of Science in definiteness, is best 
shown by the contrast between its qualitative stage, and its 
quantitative stage. At first the facts ascertained were, that 



THE LAW OP EVOLUTION CONTINUED. 377 

between such and such phenomena some connexion existed 
^that the appearances a and b always occurred together or 
in succession ; but it was known neither what was the 
nature of the relation between a and b, nor how much of a 
accompanied so much of b. The development of Science 
lias in part been the reduction of these vague connexions to 
listinct ones. Most relations have been classed as me- 
chanical, chemical, thermal, electric, magnetic, &c. ; and wo 
Lave learnt to infer the amounts of the antecedents and con- 
sequents from each other with exactness. Of 
llustrations, some furnished by physics have been given; 
and from other sciences plenty may be added. We have 
positively ascertained the constituents of numerous com. 
pounds which our ancestors could not analyze, and of a far 
greater number which they never even saw ; and the com- 
bining equivalents of these elements are accurately calcu- 
lated. Physiology shows advance from qualitative to quan- 
titative prevision in the weighing and measuring of organic 
products, and of the materials consumed; as well as in 
measurement of functions by the spirometer and the sphyg- 
mograph. By Pathology it is displayed in the use of the 
statistical method of determining the sources of diseases, 
and the effects of treatment. In Botany and Zoology, the 
numerical comparisons of Floras and Faunas, leading to 
specific conclusions respecting their sources and distribu- 
tions, illustrate it. And in Sociology, questionable as are 
the conclusions usually drawn from the classified sum-totals 
of the census, from Board-of- Trade tables, and from 
criminal returns, it must be admitted that these imply a 
progress towards more accurate conceptions of social 
phenomena. 

That an essential characteristic of advancing Science is 
increase in definiteness, appears indeed almost a truism, 
when we remember that Science may be described as 
definite knowledge, in contradistinction to that indefinite 
knowledge possessed by the uncultured. And if, as we 



878 THE LAW OP EVOLUTION CONTINUED. 

cannot question, Science has, in the course of ages, been 
evolved out of this indefinite knowledge of the uncultured ; 
then, the gradual acquirement of that great definitenesa 
which now distinguishes it, must have been a leading trait 
in its evolution. 

§ 137. The Arts, industrial and sesthetic, supply illustra- 
tions perhaps still more striking. Flint implements of the 
kind recently found in certain of the later geologic deposits, 
show the extreme want of precision in men's first handi- 
works. Though a great advance on these is seen in the 
tools and weapons of existing savage tribes, yet an inexact- 
ness in forms and fittings distinguishes such tools and 
weapons from those of civilized races. In a smaller degree, 
the productions of the less-advanced nations are character- 
ized by like defects. A Chinese junk, with all its con- 
tained furniture and appliances, nowhere presents a line 
that is quite straight, a uniform curve, or a true sur- 
face. JSTor do the utensils and machines of our 
ancestors fail to exhibit a similar inferiority to our own. 
An antique chair, an old fireplace, a lock of the last century, 
or almost any article of household use that has been pre- 
served for a few generations, proves by contrast how greatly 
the industrial products of our time excel those of the past in 
their accuracy. Since planing machines have been invented, 
it has become possible to produce absolutely straight lines, 
and surfaces so truly level as to be air-tight when applied to 
each other. While in the dividing-engine of Troughton, in 
the micrometer of "Whitworth, and in microscopes that show 
fifty thousand divisions to the inch, we have an exactness 
as far exceeding that reached in the works of our great- 
grandfathers, as theirs exceeded that of the aboriginal 
celt-makers. 

In the Fine Arts there has been a parallel progress. 
From the rudely-carved and painted idols of savages, 
through the early sculptures characterized by limbs with- 



THE LAW OF EVOLUTION CONTINUED. o79 

put muscular detail, wooden-looking drapery, and faces 
devoid of individuality, up to the later statues of the Greeks 
Dr some of those now produced, the increased accuracy of 
representation is conspicuous. Compare the mural paint- 
ings of the Egyptians with the paintings of mediasval 

urope, or these with modern paintings, and the more 
precise rendering of the appearances of objects is mani- 
fest. It is the same with fiction and the drama. 
In the marvellous tales current among Eastern nations, in 
the romantic legends of feudal Europe, as well as in the 
mystery-plays and those immediately succeeding them, we 
see great want of correspondence to the realities of life ; 
dike in the predominance of supernatural events, in the 
extremely improbable coincidences, and in the vaguely- 
indicated personages. Along with social advance, there 
aas been a progressive diminution of unnaturalness — an 

pproach to truth of representation. And now, novels and 
plays are applauded in proportion to the fidelity with which 
they exhibit individual characters ; improbabilities, like the 
impossibilities which preceded them, are disallowed; and 
there is even an incipient abandonment of those elaborate 
plots which life rarely if ever furnishes. 

§ 138. It would be easy to accumulate evidences of other 
kinds. The progress from myths and legends, extreme 
in their misrepresentations, to a history that has slowly 
become, and is still becoming, more accurate; the esta- 
blishment of settled systematic methods of doing things, 
instead of the indeterminate ways at first pursued — these 
might be enlarged upon in further exemplification of the 
general law. But the basis of induction is already wide 
enough. Proof that all Evolution is from the indefinite to 
the definite, we find to be not less abundant than proof 
that all Evolution is from the homogeneous to the hete- 

cceneous. 

It should, however, be added that this advance in definite- 



380 THE LAW OF EVOLUTION CONTINUED. 

ness is not a primary but a secondary phenomenon — is a 
result incidental on other changes. The transformation of 
a whole that was originally diffused and uniform into a con- 
centrated combination of multiform parts,, implies progres- 
sive separation both of the whole from its environment and 
of the parts from one another. While this is going on there 
must be indistinctness. Only as the whole gains density, 
does it become sharply marked off from the space or matter 
lying outside of it; and only as each separated division 
draws into its mass those peripheral portions which are at 
first imperfectly disunited from the peripheral portions of 
neighbouring divisions, can it acquire anything like a precise 
outline. That is to say, the increasing definiteness is a conco- 
mitant of the increasing consolidation, general and local. 
While the secondary re-distributions are ever adding to the 
heterogeneity, the primary re-distribution, while augmenting 
the integration, is incidentally giving distinctness to tho in- 
creasingly-unlike parts as well as to the aggregate of them. 
But though this universal trait of Evolution is a necessary 
accompaniment of the traits set forth in preceding chapters, 
it is not expressed in the words used to describe them. It 
is therefore needful further to modify our formula. The 
more specific idea of Evolution now reached is — a change 
from an indefinite, incoherent homogeneity, to a definite 
coherent heterogeneity, accompanying the dissipation of 
motion and integration of matter. 



CHAPTER XYII. 

THE LAW OF EVOLUTION CONCLUDED. 

§ 139. The conception of Evolution elaborated in the 
foregoing chapters, is still incomplete. True though it is 
it is not the whole truth. The transformations which all 
things undergo during the ascending phases of their exist- 

mce, we have contemplated under three aspects ; and by 
uniting these three aspects as simultaneously presented, we 
have formed an approximate idea of the transformations. 
But there are concomitant changes about which nothing has 

r et been said; and which, though less conspicuous, are no 

ess essential. 

For thus far we have attended only to the re-distribution 
of Matter, neglecting the accompanying re-distribution of 
Motion. Distinct or tacit reference has, indeed, repeatedly 
been made to the dissipation of Motion, that goes on along 
with the concentration of Matter ; and were all Evolution 
absolutely simple, the total fact would be contained in the 
proposition that as Motion dissipates Matter concentrates. 
But while we have recognized the ultimate re-distribu- 
tion of the Motion, we have passed over its proximate re-dis- 
tribution. Though something has from time to time becu 
said about the escaping motion, nothing has been said 
about the motion that docs not escape. In proportion a3 
Evolution becomes compound — in proportion as an aggre- 
gate retains, for a considerable time, such a quantity of 



382 THE LAW OF EVOLUTION CONCLUDED. 

motion as permits secondary re-distributions of its com- 
ponent matter, there necessarily arise secondary re-distri- 
butions of its retained motion. As fast as the parts 
are transformed, there goes on a transformation of the 
sensible or insensible motion possessed by the parts. The 
parts cannot become progressively integrated, either indivi- 
dually or as a combination, without their motions, indivi- 
dual or combined, becoming more integrated. There cannot 
arise among the parts heterogeneities of size, of form, of 
quality, without there also arising heterogeneities in the 
amounts and directions of their motions, or the motions of 
their molecules. And increasing definiteness of the parts 
implies increasing definiteness of their motions. In short, 
the rhythmical actions going on in each aggregate, must 
differentiate and integrate at the same time that the struc- 
ture does so. 

The general theory of this re- distribution of the retained 
motion, must here be briefly stated. Properly to supplement 
our conception of Evolution under its material aspect by a 
conception of Evolution under its dynamical aspect, we have 
to recognize the source of the integrated motions that arise, 
and to see how their increased multiformity and definiteness 
are necessitated. If Evolution is a passage of 

matter from a diffused to an aggregated state — if while the 
dispersed units are losing part of the insensible motion 
which kept them dispersed, there arise among coherent 
masses of them, any sensible motions with respect to one 
another; then this sensible motion must previously have 
existed in the form of insensible motion among the units. 
If concrete matter arises by the aggregation of diffused 
matter, then concrete motion arises by the aggregation of 
diffused motion. That which comes into existence as the 
movement of masses, implies the cessation of an equivalent 
molecular movement. While we must leave in the shape of 
hypothesis the belief that the celestial motions have thus 
originated^ we may see, as a matter of fact, that this is the 



THE LAW OF EVOLUTION CONCLUDED. 383 

genesis of all sensible motions on the Earth's surface. As 
aefore shown (§69), the denudation of lands and deposit 
of new strata, are effected by water in the course of its de- 
cent to the sea, or during the arrest of those undulations 
produced on it by winds ; and, as before shown, the eleva- 
tion of water to the height whence it fell, is due to solar 
eat, as is also the genesis of those aerial currents which 
drift it about when evaporated and agitate its surface when 
condensed. That is to say, the molecular motion of the 
etherial medium is transformed into the motion of gases, 
thence into the motion of liquids, and thence into the mo- 
tion of solids — stages in each of which a certain amount 
of molecular motion is lost and an equivalent motion of 
masses gained. It is the same with organic movements. 
Certain rays issuing from the Sun, enable the plant to 
reduce special elements existing in gaseous combination 
around it, to a solid form — enable the plant, that is, to 
grow and carry on its functional changes. And since 
growth, equally with circulation of sap, is a mode of sen- 
sible motion, while those rays which have been expended 
in generating it consist of insensible motions, we have 
here, too, a transformation of the kind alleged. Animals, 
derived as their forces are, directly or indirectly, from 
plants, carry this transformation a step further. The 
automatic movements of the viscera, together with the 
roluntary movements of the limbs and body at large, arise 
at the expense of certain molecular movements through- 
out the nervous and muscular tissues ; and these originally 
arose at the expense of certain other molecular move- 
ments propagated by the Sun to the Earth ; so that both 
the structural and functional motions which organic Evo- 
ution displays, are motions of aggregates generated by 
the arrested motions of units. Even with the aggregates of 
these aggregates the same rule holds. For among associated 
men, the progress is ever towards a merging of individual 
actions in the actions of corporate bodies. While, thee, 



384 THE LAW OF EVOLUTION CONCLUDED. 

during Evolution, the escaping motion becomes, by perpe- 
tually widening dispersion, more disintegrated, the motion 
that is for a time retained, becomes more integrated ; and 
so, considered dynamically, Evolution is a decrease in the 
relative movements of parts and an increase in the relative 
movements of wholes — using the words parts and wholes 
in their most general senses. The advance is from the 
motions of simple molecules to the motions of compound 
molecules; from molecular motions to the motions of masses; 
and from the motions of smaller masses to the motions of 
larger masses. The accompanying change towards 

greater multiformity among the retained motions, takes 
place under the form of an increased variety of rhythms. 
We have already seen that all motion is rhythmical, from 
the infinitesimal vibrations of infinitesimal molecules, up 
to those vast oscillations between perihelion and aphelion 
performed by vast celestial bodies. And as the contrast 
between these extreme cases suggests, a multiplication of 
rhythms must accompany a multiplication in the degrees 
and modes of aggregation, and in the relations of the aggre- 
gated masses to incident forces. The degree or mode of 
aggregation will not, indeed, affect the rate or extent of 
rhythm where the incident force increases as the aggregate 
increases, which is the case with gravitation : here the only 
cause of variation in rhythm, is difference of relation to the 
incident forces; as we see in a pendulum, which, though 
unaffected -in its movements by a change in the weight of 
the bob, alters its rate of oscillation when taken to the 
equator. But in all cases where the incident forces do not 
vary as the masses, every new order of aggregation initiates 
a new order of rhythm : witness the conclusion drawn from 
the recent researches into radiant heat and light, that the 
molecules of different gases have different rates of undulation. 
So that increased multiformity in the arrangement of 
matter, necessarily generates increased multiformity of 
rhythm; both through increased variety in the sizes and 



THE LAW OF EVOLUTION CONCLUDED. 385 

forms of aggregates, and through, increased variety in their 
relations to the forces which move them. That 

these motions as they become more integrated and more 
heterogeneous, must become more definite, is a proposition 
that need not detain us. In proportion as any part of an 

volving whole segregates and consolidates, and in so doing 

oses the relative mobility of its components, its aggregate 

lotion must obviously acquire distinctness. 
Here, then, to complete our conception of Evolution, we 

ave to contemplate throughout the Cosmos, these metamor- 
morphoses of retained motion that accompany the metamor- 
phoses of component matter. We may do this with compa- 

ative brevity : the reader having now become so far familiar 
vith the mode of looking at the facts, that less illustration 
vill suffice. To save space, it will be convenient to deal 
vith the several aspects of the metamorphoses at the 
same time. 

§ 140. Dispersed matter moving, as we see it in a spiral 
lebula, towards the common centre of gravity, from all 
joints at all distances with all degrees of indirectness, must 
■any into the nebulous mass eventually formed, innumerable 
nomenta contrasted in their amounts and directions. As 
the integration progresses, such parts of these momenta as 
conflict are mutually neutralized, and dissipated as heat. The 
)ut-standing rotatory motion, at first having unlike angular 
velocities at the periphery and at various distances from the 
centre, has its differences of angular velocity gradually re- 
duced ; advancing towards a final state, now nearly reached 
3y the Sun, in which the angular velocity of the whole mass 
s the same — in which the motion is integrated. So, 

too, with each planet and satellite. Progress from the 
motion of a nebulous ring, incoherent and admitting of much 
elative motion within its mass, to the motion of a dense 
spheroid, is progress to a motion that is completely inte- 

tted. The rotation, and the translation through space, 
18 



386 THE LAW OP EVOLUTION CONCLUDED. 

severally become one and indivisible. Meanwhile, 

there goes on that further integration by which the motions 
of all the parts of the Solar System are rendered mutually 
dependent. Locally in each planet and its satellites, and 
generally in the Sun and the planets, we have a system of 
simple and compound rhythms, with periodic and secular 
variations, forming together an integrated set of movements. 
The matter which, in its original diffused state, had 
motions that were confused, indeterminate, or without 
sharply-marked distinctions, has, during the evolution of 
the Solar System, acquired definitely heterogeneous motions. 
The periods of revolution of all the planets and satellites 
are unlike ; as are also their times of rotation. Out of 
these definitely heterogeneous motions of a simple kind, 
arise others that are complex, but still definite; — as those 
produced by the revolutions of satellites compounded with 
the revolutions of their primaries ; as those of which pre- 
cession is the result; and as those which are known as 
perturbations. Each additional complexity of structure has 
caused additional complexity of movements ; but still, a de- 
finite complexity, as is shown by having calculable results. 

§ 141. While the Earth's surface was molten, the currents 
in the voluminous atmosphere surrounding it, mainly of 
ascending heated gases and of descending precipitated 
liquids, must have been local, numerous, indefinite, and but 
little distinguished from one another. But as fast as the 
surface cooled, and solar radiation began to cause appre- 
ciable differences of temperature between the equatorial 
and polar regions, a decided atmospheric circulation from 
poles to equator and from equator to poles, must have slowly 
established itself : the vast moving masses of air becoming, 
at last, trade-winds and other such permanent definite 
currents. These integrated motions, once com- 

paratively homogeneous, were rendered heterogeneous as 
great islands and continents arose, to complicate them by 



TITE LAW OP EVOLUTION CONCLUDED. 8S7 

periodic winds, caused by tlic varied heating of wide tracts 
of land at different seasons. Rhythmical motions of a con- 
stant and simple kind, were, by increasing multiformity of 
the Earth's surface, differentiated into an involved com- 
bination of constant and recurrent rhythmical motions, 
joined with smaller motions that are irregular. 

Parallel changes must have taken place in the motions of 
water. On a thin crust, admitting of but small elevations 
and depressions, and therefore of but small lakes and seas, 
none beyond small local circulations were possible. But 
along with the formation of continents and oceans, came the 
vast movements of water from warm latitudes to cold and 
from cold to warm — movements increasing: in amount, in 
deiinitencss, and in variety of distribution, as the fea- 
tures of the Earth's surface became larger and more con- 
trasted. The like holds with drainage waters. The 
tricklings of insignificant streams over narrow pieces of land, 
were once the only motions of such waters; but as fast as wide 
areas came into existence, the motions of many tributaries 
became massed into the motions of great rivers; and instead 
of motions very much alike, there arose motions consider- 
ably varied. 

Nor can we well doubt that the movements in the 
Earth's crust itself, have presented an analogous progress. 
Small, numerous, local, and very much like one another, 
while the crust was thin, the elevations and subsidences 
must, as the crust thickened, have extended over larger 
areas, must have continued for longer eras in the same 
directions, and must have been made more unlike in diffe- 
rent regions by local differences of structure in the crust. 

§ 142. In organisms the advance towards a more inte- 
grated, heterogeneous, and definite distribution of the re- 
tained motion, which accompanies the advance towards a 
more integrated, heterogeneous, and definite distribution of 
the component matter, is mainly what we understand as the 



383 TIIE LAW OE EVOLUTION CONCLUDED. 

development of functions. All active functions are either 
sensible movements, as those produced by contractile 
organs; or such insensible movements as those propagated 
through the nerves; or such insensible movements as those 
by which, in secreting organs, molecular re-arrangements 
are effected, and new combinations of matter produced. 
And what we have here to observe is, that during evolution, 
functions, like structures, become more consolidated in- 
dividually, as well as more combined with one another, at 
the same time that they become more multiform and more 
distinct. 

The nutritive juices in animals of low types, move hither 
and thither through the tissues quite irregularly, as local 
strains and pressures determine : in ■ the absence of a dis- 
tinguishable blood and a developed vascular system, there 
is no definite circulation. But along with the structural 
evolution which establishes a finished apparatus for dis- 
tributing blood, there goes on the functional evolution 
which establishes large and rapid movements of blood, 
definite in their courses and definitely distinguished as 
efferent and afferent, and that are heterogeneous not simply 
in their directions but in their characters — being here di- 
vided into gushes and there continuous. 

Instance, again, the way in which, accompanying the 
structural differentiations and integrations of the aliment- 
ary canal, there arise differentiations and integrations 
both of its mechanical movements and its actions of a non- 
mechanical kind. Along an alimentary canal of a primitive 
type, there pass, almost uniformly from end to end, waves of 
constriction. But in a well-organized alimentary canal, 
the waves of constriction are widely unlike at different 
parts, in their kinds, strengths, and rapidities. In the mouth 
they become movements of prehension and mastication — \ 
now occurring in quick succession and now ceasing for 
hours. In the oesophagus these contractions, propulsive in 
their office, and travelling with considerable speed, take 



THE LAW OF EVOLUTION CONCLUDED. oS9 

place at intervals during eating, and then do not take 
place till the next meal. In the stomach another modi- 
fication of this originally uniform action occurs : the 
muscular constrictions are powerful, and continue during 
the long periods that the stomach contains food. Through- 
out the upper intestines, again, a further difference shows 
itself — the waves travel along without cessation but are 
relatively moderate. Finally, in the rectum this rhythm 
departs in another way from the common type : qui- 
escence lasting for many hours, is followed by a series 
of strong contractions. Meanwhile, the essential actions 
which these movements aid, have been growing moro 
definitely heterogeneous. Secretion and absorption are 
no longer carried on in much the same way from end to 
end of the tube ; but the general function divides into 
various subordinate functions. The solvents and ferments 
furnished by the coats of the canal and the appended glands, 
become widely unlike at upper, middle, and lower parts of 
the canal ; implying different kinds of molecular changes. 
Here the process is mainly secretory, there it is mainly 
absorbent, while in other places, as in the oesophagus, 
neither secretion nor absorption takes place to any ap- 
preciable extent. "While these and other internal 
motions, sensible and insensible, are being rendered more 
various, and severally more consolidated and distinct, there 
is advancing the integration by which they are united into 
local groups of motions and a combined system of motions. 
While the function of alimentation sub-divides, its- sub- 
divisions become co-ordinated, so that muscular and secretory 
actions go on in concert, and so that excitement of one part 
of the canal sets up excitement of the rest. Moreover, the 
whole alimentary function, while it supplies matter for the 
circulatory and respiratory functions, becomes so integrated 
with them that it cannot for a moment go on without them. 
And, as evolution advances, all three of these fundamental 
functions fall into greater subordination to the nervous 



390 THE LAW OP EVOLUTION CONCLUDED. 

functions — depend more and more on the due amount; of 
nervous discharge. 

When we trace up the functions of external organs the 
same truth discloses itself. Microscopic creatures are moved 
through the water by oscillations of the cilia covering their 
surfaces ; and various larger forms, as the Turbellaria, pro- 
gress by ciliary action over solid surfaces. These motions 
of cilia are, in the first place, severally very minute ; in the 
second place they are homogeneous ; and in the third place 
there is but little definiteness in them individually, or in 
their joint product, which is mostly a mere random change 
of place not directed to any selected point. Contrasting 
this ciliary action with the action of developed locomotive 
organs of whatever kind, we see that instead of innumerable 
small or unintegrated movements there are a few compara- 
tively large or integrated movements ; that actions all alike 
are replaced by actions partially unlike ; and that instead of 
being very feebly or almost accidentally co-ordinated, their 
co-ordination is such as to render the motions of the body 
as a whole, precise. A parallel contrast, less ex- 

treme but sufficiently decided, is seen when we pass from 
the lower types of creatures with limbs to the higher types 
of creatures with limbs. The legs of a Centipede have 
motions that are numerous, small, and homogeneous ; and 
are so little integrated that when the creature is divided 
and sub-divided, the legs belonging to each part propel 
that part independently. But in one of the higher Annu,' 
losa, as a Crab, the relatively few limbs have motions 
that are comparatively large in their amounts, that are 
considerably unlike one another, and that are integrated 
into compound motions of tolerable definiteness. 

§ 143. The last illustrations are introductory to illustra- 
tions of the kind we class as psychical. They are the physio- 
logical aspects of the simpler among those functions which, 
under a more special and complex aspect, we distinguish aa 



THE LAW OP EVOLUTION CONCLUDED. 391 

psychological. Tlio phenomena subjectively known as 
changes in consciousness, are objectively known as nervous 
excitations and discharges, which science now interprets into 
modes of motion. Hence, in following up organic evolution, 
the advance of retained motion in integration, in hetero- 
geneity, and in definiteness, may be expected to show itself 
alike in the visible ncrvo-muscular actions and in the cor- 
relative mental changes. We may conveniently look at the 
facts as exhibited during individual evolution, before looking 
at them as exhibited in general evolution. 

The progress of a child in speech, very completely ex- 
hibits the transformation. Infantine noises are comparatively 
homogeneous; alike as being severally long-drawn and 
nearly uniform from end to end, and as being constantly 
repeated with but little variation of quality between narrow 
limits. They are quite un- coordinated — there is no integra- 
tion of them into compound sounds. They are inarticulate, 
or without those definite beginnings and endings character- 
izing the sounds we call words. Progress shows itself first 
in the multiplication of the inarticulate sounds : the extreme 
vowels are added to the medium vowels, and the compound 
to the simple. Presently the movements which form the 
simpler consonants are achieved, and some of the sounds 
become sharply cut ; but this definiteness is partial, for only 
initial consonants being used, the sounds end vaguely. 
"While an approach to distinctness thus results, there also 
results, by combination of different consonants with the 
same vowels, an increase of heterogeneity ; and along with 
the complete distinctness which terminal consonants give, 
arises a further great addition to the number of unlike 
sounds produced. The more difficult consonants and the 
compound consonants, imperfectly articulated at first, aro 
by and by articulated with precision ; and there comes yet 
another multitude of different and definite words — words 
that imply many kinds of vocal movements, severally pcr- 
iormed with exactness, as well as perfectly integrated into 



892 THE LAW OF EVOLUTION CONCLUDED. 

complex groups. The subsequent advance to dissyllables 
and polysyllables, and to involved combinations of words, 
shows the still higher degree of integration and heterogeneity 
eventually reached by these organic motions. The 

acts of consciousness correlated with these nervo-mus- 
cular acts, of course go through parallel phases; and the 
advance from childhood to maturity yields daily proof that 
the changes which, on their physical side are nervous pro- 
cesses, and on their mental side are processes of thought, 
become more various, more defined, more coherent. At 
first the intellectual functions are very much alike in kind — 
recognitions and classifications of simple impressions alone 
go on; but in course of time these functions become multi- 
form. Reasoning grows distinguishable, and eventually we 
have conscious induction and deduction; deliberate recollec- 
tion and deliberate imagination are added to simple un- 
guided association of ideas ; more special modes of mental 
action, as those which result in mathematics, music, poetry, 
arise ; and within each of these divisions the mental pro- 
cesses are ever being further differentiated. In definiteness 
it is the same. The infant makes its observations so inac- 
curately that it fails to distinguish individuals. The child 
errs continually in its spelling, its grammar, its arithmetic. 
The youth forms incorrect judgments on the affairs of life. 
Only with maturity comes that precise co-ordination in the 
nervous processes that is implied by a good adjustment of 
thoughts to things. Lastly, with the integration by which 
simple mental acts are combined into complex mental acts, 
it is so likewise. In the nursery you cannot obtain con- 
tinuous attention — there is inability to form a coherent 
series of impressions ; and there is a parallel inability to 
unite many co-existent impressions, even of the same order : 
witness the way in which a child's remarks on a picture, 
show that it attends only to the individual objects repre- 
sented, and never to the picture as a whole. But with 
advancing years it becomes possible to understand an in- 



THE LAW OE EVOLUTION CONCLUDED. o93 

f olved sentence, to follow long trains of reasoning, to hold 
iu one mental grasp numerous concurrent circumstances. 
The like progressive integration takes place among the 
mental changes we distinguish as feelings ; which in a child 
act singly, producing impulsiveness, but in an adult act 
more in concert, producing a comparatively balanced conduct. 
After these illustrations supplied by individual evolution, 
we may deal briefly with those supplied by general evolu- 
tion, which are analogous to them. A creature of very low 
intelligence, when aware of some large object in motion 
near it, makes a spasmodic movement, causing, it may 
be, a leap or a dart. The perceptions implied are re- 
latively simple, homogeneous, and indefinite : the moving 
objects are not distinguished in their kinds as injurious or 
otherwise, as advancing or receding. The actions of escape 
are similarly all of one kind, have no adjustments of direc- 
tion, and may bring the creature nearer the source of peril 
instead of further off. A stage higher, when the dart or the 
leap is away from danger, we see the nervous changes so 
far specialized that there results distinction of direction ; 
indicating a greater variety among them, a greater co-ordi- 
nation or integration of them in each process, and a greater 
definiteness. In still higher animals that discriminate be- 
tween enemies and not-enemies, as a bird that flies from a 
man but not from a cow, the acts of perception have 
severally become united into more complex wholes, since 
cognition of certain differential attributes is implied ; they 
have become more multiform, since each additional com- 
ponent impression adds to the number of possible com- 
pounds ; and they have, by consequence, become more spe- 
cific in their correspondences with objects — more definite. 
And then in animals so intelligent that they identify by 
eight not species only but individuals of a species, the 
mental changes are yet further distinguished in the same 
three ways. In the course of human evolution tho 

law is equally manifested. The thoughts of the savage are 



394 THE LAW OF EVOLUTION CONCLUDED. 

nothing like so heterogeneous in their kinds as those of the 
civilized man, whose complex environment presents a multi- 
plicity of new phenomena. His mental acts, too, are much 
less involved — he has no words for abstract ideas, and is 
found to be incapable of integrating the elements of such 
ideas. And in all "but simple matters there is none of that 
precision in his thinking which, among civilized men, leads 
to the exact conclusions of science. Nor do the emotions 
fail to exhibit a parallel contrast. 

§ 144. How in societies the movements or functions pro- 
duced by the confluence of individual actions, increase in 
their amounts, their multiformities, their precision, and 
their combination, scarcely needs insisting upon after what 
has been pointed out in foregoing chapters. For the sake 
of symmetry of statement, however, a typical example or 
two may be set down. 

Take the actions devoted to defence or aggression. At 
first the military function, undifferentiated from the rest (all 
men in primitive societies being warriors) is relatively 
homogeneous, is ill-combined, and is indefinite : savages 
making a joint attack severally fight independently, in 
similar ways, and without order. But as societies evolve 
and the military function becomes separate, we see that 
while its scale increases, it progresses in multiformity, 
in definiteness, and in combination. The movements 
of the thousands of soldiers that replace the tens of 
warriors, are divided and re-divided in their kinds — -here 
are bodies that manoeuvre and fire artillery; there are 
battalions that fight on foot ; and elsewhere are troops that 
charge on horseback. Within each of these differentiated 
functions there come others : there are distinct duties dis- 
charged by privates, sergeants, captains, colonels, generals, 
as also by those who constitute the commissariat and those 
who attend to the wounded. The actions that have thus 
become comparatively heterogeneous in general and in de- 



THE LAW OF EVOLUTION CONCLUDED. 395 

tail, have simultaneously increased in precision. Accuracy 
of evolutions is given by perpetual drill ; so that in battle, 
men and the regiments formed of them, are made to take 
definite positions and perform definite acts at definite times. 
Once more, there has gone on that integration by which tho 
multiform actions of an army are directed to a single end. 
By a co-ordinating apparatus having the commander-in- 
chief for its centre, tho charges, and halts, and retreats are 
duly concerted ; and a hundred thousand individual actions 
are united under one will. 

The progress here so clearly marked, is a progress trace- 
able throughout social functions at large. Comparing the 
rule of a savage chief with that of a civilized government, 
aided by its subordinate local governments and their officers, 
down to the police in the streets, we see how, as men have 
advanced from tribes of tens to nations of millions, the re- 
gulative process has grown large in amount ; how, guided 
by written laws, it has passed from vagueness and irregu- 
larity to comparative precision ; and how it has sub-divided 
into processes increasingly multiform. Or observing how 
the barter that goes on among barbarians, differs from our 
own commercial processes, by which a million's worth of com- 
modities is distributed daily ; by which the relative values 
of articles immensely varied in kinds and qualities are 
measured, and the supplies adjusted to the demands ; and 
by which industrial activities of all orders are so combined 
that each depends on the rest and aids the rest ; we see that 
the kind of action which constitutes trade, has become pro- 
gressively more vast, more varied, more definite, and more 
integrated. 

§ 145. A finished conception of Evolution we thus find 
to be one which includes the re-distribution of the retained 
motion, as well as that of the component matter. This 
added element of the conception is scarcely, if at all, less 
important than the other. The movements of the Sola? 



3% THE LAW OF EVOLUTION CONCLUDED. 

System have for us a significance equal to that which the 
sizes, forms, and relative distances of its members possess. 
And of the phenomena presented by an organism, it 
must be admitted that the combined sensible and in- 
sensible actions we call its life, do not yield in interest to 
its structural traits. Leaving out, however, all implied 
reference to the way in which these two orders of facts con- 
cern us, it is clear that with each re-distribution of matter 
there necessarily goes a re-distribution of motion ; and that 
the unified knowledge constituting Philosophy, must com- 
prehend both aspects of the transformation. 

While, then, we have to contemplate the matter of an 
evolving aggregate as undergoing, not progressive integra- 
tion simply, but as simultaneously undergoing various 
secondary re-distributions ; we have also to contemplate the 
motion of an evolving aggregate, not only as being gradually 
dissipated, but as passing through many secondary re-distri- 
butions on the way towards dissipation. As the structural 
complexities that arise during compound evolution, are in- 
cidental to the progress from the extreme of diffusion to the 
extreme of concentration; so the functional complexities 
accompanying them, are incidental to the progress from the 
greatest quantity of contained motion to the least quantity 
of contained motion. And we have to state these con- 
comitants of both transformations, as well as their begin- 
nings and ends. 

Our formula, therefore, needs an additional clause. To 
combine this satisfactorily with the clauses as they stand in 
the last chapter, is scarcely practicable; and for convenience 
of expression it will be best to change their order. Doing 
this, and making the requisite addition, the formula finally 
stands thus : — Evolution is an integration of matter and con- 
comitant dissipation of motion; during which the matter 
passes from an indefinite, incoherent homogeneity to a de- 
finite, coherent heterogeneity ; and during which the retained 
motion undergoes a parallel transformation. 



CHAPTER XVIII. 
THE INTERPRETATION OF EVOLUTION. 

§ 140. Is this law ultimate or derivative ? Must we rest 
satisfied with the conclusion that throughout all classes of 
concrete phenomena such is the course of transformation ? 
Or is it possible for us to ascertain why such is the course 
of transformation? May we seek for some all-pervading 1 
principle which underlies this all-pervading process ? Can 
the inductions set forth in the preceding four chapters be 
reduced to deductions? 

Manifestly this community of result implies community of 
cause. It may be that of such cause no account can bo 
given, further than that the Unknowable is manifested to us 
after this mode. Or, it may be that this mode of mani- 
festation is reducible to a simpler mode, from which these 
many complex effects follow. Analogy suggests the latter 
inference. Just as it was possible to interpret the empirical 
generalizations called Kepler's laws, as necessary conse- 
quences of the law of gravitation ; so it may be possible to 
interpret the foregoing empirical generalizations as neces- 
sary consequences of some deeper law. 

Unless we succeed in finding a rationale of this universal 
metamorphosis, we obviously fall short of that completely 
unified knowledge constituting Philosophy. As they at 
present stand, the several conclusions we have lately reached 
appear to be independent — there is no demonstrated con- 



398 TEE INTERPRETATION OF EVOLUTION. 

nexion between increasing definitoness and increasing hete- 
rogeneity, or between both and increasing integration. Still 
less evidence is there that these laws of the re- distribution 
of matter and motion, are necessarily correlated with those 
laws of the direction of motion and the rhythm of motion, 
previously set forth. But until we see these now separate 
truths to be implications of one truth, our knowledge re- 
mains imperfectly coherent. 

§ 147. The task before us, then, is that of exhibiting the 
phenomena of Evolution in synthetic order. Setting out 
from an established ultimate principle, it has to be shown 
that the course of transformation among ail kinds of 
existences, cannot but be that which we have seen it to be. 
It has to be shown that the re-distribution of matter and 
motion, must everywhere take place in those ways, and pro- 
duce those traits, which celestial bodies, organisms, societies, 
alike display. And it has to be shown that this universality 
of process, results from the same necessity which determines 
each simplest movement around us, down to the accelerated 
fall of a stone or the recurrent beat of a harp-string. 

In other words, the phenomena of Evolution have to be 
deduced from the Persistence of Force. As before said — 
" to this an ultimate analysis brings us down ; and on this 
a rational synthesis must build up." This being the 
ultimate truth which transcends experience by underlying 
it, so furnishing a common basis on which the widest gene- 
ralizations stand, these widest generalizations are to be 
unified by referring them to this common basis. Already 
the truths manifested throughout concrete phenomena of all 
orders, that there is equivalence among transformed forces, 
that motion follows the line of least resistance, and that it is 
universally rhythmic, we have found to be severally deducible 
from the persistence of force ; and this affiliation of them on 
the persistence of force has reduced them to a coherent 
whole. Here we have similarly to affiliate the universal 



THE INTERPRETATION OF EVOLUTION. 390 

traits of Evolution, by showing that, given the persistence 
of force, the re-distribution of matter and motion neces- 
sarily proceeds in such way as to produce them ; and by 
doing this we shall unite them as co-relative aspects of one 
law, at the same time that we unite this law with the fore- 
going simpler laws. 

§ 148. Before proceeding it will be well to set down some 
principles that must be borne in mind. In interpreting 
Evolution we shall have to consider, under their special forms, 
the various resolutions of force that accompany the re-distri- 
bution of matter and motion. Let us glance at such resolu- 
tions under their most general forms. 

Any incident force is primarily divisible into its effective 
and non-effective portions. In mechanical impact, the entire 
momentum of a striking body is never communicated to the 
body struck : even under those most favourable conditions 
in which the striking body loses all its sensible motion, 
there still remains with it some of the original momentum, 
under the shape of that insensible motion produced among 
its particles by the collision. Of the light or heat falling on 
any mass, a part, more or less considerable, is reflected; and 
only tho remaining part works molecular changes in the 
mass. Next it is to be noted that the effective 

force is itself divisible into the temporarily effective and the 
permanently effective. The units of an aggregate acted on, 
may undergo those rhythmical changes of relative position 
which constitute increased vibration, as well as other 
changes of relative position which are not from instant to 
instant neutralized by opposite ones. Of these, the first, 
disappearing in the shape of radiating undulations, leave tho 
molecular arrangement as it originally was ; while the se- 
cond conduce to that re-arrangement characterizing com- 
pound Evolution. Yet a further distinction has 
to be made. The permanently effective force works out 
changes of relative position of two kinds — the insensible 



100 THE INTERPRETATION OF EVOLUTION. 

and the sensible. The insensible transpositions among the 
units are those constituting molecular changes, including 
what we call chemical composition and decomposition ; and 
it is these which we recognize as the qualitative differences 
that arise in an aggregate. ■ The sensible transpositions are 
such as result when certain of the units, instead of being 
put into different relations with their immediate neighbours, 
are carried away from them and deposited elsewhere. 

Concerning these divisions and sub-divisions of any force 
affecting an aggregate, the fact which it chiefly concerns us 
to observe is, that they are complementary to each other. 
Of the whole incident force, the effective must be that which 
remains after deducting the non-effective. The two parts of 
the effective force must vary inversely as each other : where 
much of it is temporarily effective, little of it can be perma- 
nently effective; and vice versa. Lastly, the permanently 
effective force, being expended in working both the insen- 
sible re-arrangements which constitute molecular modifica- 
tion, and the sensible re-arrangements which result in 
structure, must generate of either kind an amount that is 
great or small in proportion as it has generated a small or 
great amount of the other. 



CHAPTER XIX. 



THE INSTABILITY OF THE HOMOGENEOUS.* 



§ 149. The difficulty of dealing with transformations so 
many-sided as those which all existences have undergone, or 
are undergoing, is such as to make a definite or complete 
deductive interpretation seem almost hopeless. So to grasp 
the total process of re-distribution of matter and motion, as 
to see simultaneously its several necessary results in their 
actual inter-dependence, is scarcely possible. There is, how- 
ever, a mode of rendering the process as a whole tolerably 
comprehensible. Though the genesis of the re-arrangement 
undergone by every evolving aggregate, is in itself one, it 
presents to our intelligence several factors; and after in- 
terpreting the effects of each separately, we may, by synthesis 
of the interpretations, form an adequate conception. 

On setting out, the proposition which comes first in logical 
order, is, that some re-arrangement must result; and this 
proposition may be best dealt with under the more specific 
shape, that the condition of homogeneity is a condition of 
unstable equilibrium. 

First, as to the meaning of the terms ; respecting which 
some readers may need explanation. The phrase unstable 
cauilibrium is one used in mechanics to express a balance of 
forces of such kind, that the interference of any further force, 
however minute, will destroy the arrangement previously 

* The idea developed in this chapter originally formed part of an article on 
Transcendental Physiology," published iu 1857. See Essays, pp. 279—290 



402 THE INSTABILITY OF THE HOMOGENEOUS. 

subsisting ; and bring about a totally different arrangement. 
Thus, a stick poised on its lower end is in unstable equili- 
brium : however exactly it may be placed in a perpendicular 
position, as soon as it is left to itself it begins, at first imper- 
ceptibly, to lean on one side, and with increasing rapidity 
falls into another attitude. Conversely, a stick suspended 
from its upper end is in stable equilibrium : however much 
disturbed, it will return to the same position. The proposi- 
tion is, then, that the state of homogeneity, like the state of 
the stick poised on its lower end, is one that cannot be main- 
tained*. Let us take a few illustrations. 

Of mechanical ones the most familiar is that of the scales. 
If they be accurately made, and not clogged by dirt or rust, 
it is impossible to keep a pair of scales perfectly balanced : 
eventually one scale will descend and the other ascend— they 
will assume a heterogeneous relation. Again, if we sprinkle 
over the surface of^ a fluid a number of equal-sized particles, 
having an attraction for each other, they will, no matter how 
uniformly distributed, by and by concentrate irregularly into 
one or more groups. Were it possible to bring a mass of 
water into a state of perfect homogeneity — a state of complete 
quiescence, and exactly equal density throughout — yet the 
radiation of heat from neighbouring bodies, by affecting 
differently its different parts, would inevitably produce in- 
equalities of density and consequent currents ; and would so 
render it to that extent heterogeneous. Take a piece of red- 
hot matter, and however evenly heated it may at first be, it 
will quickly cease to be so : the exterior, cooling faster than 
the interior, will become different in temperature from it. 
And the lapse into heterogeneity of temperature, so obvious 
in this extreme case, takes place more or less in all 
cases. The action of chemical forces supplies other 

illustrations. Expose a fragment of metal to air or water, 
and in course of time it will be coated with a film of oxide, 
carbonate, or other compound : that is — its outer parts will 
become unlike its inner parts. Usually the heterogeneity 



TilE INSTABILITY OF THE HOMOGENEOUS. 403 

produced by the action of chemical forces on the surfaces of 
masses, is not striking ; because the changed portions are 
soon washed away, or otherwise removed. But if this is pre- 
vented, comparatively complex structures result. Quarries 
of trap-rock contain some striking examples. Not un- 
frequently a piece of trap may be found reduced, by the 
action of the weather, to a number of loosely- adherent coats, 
like those of an onion. Where the block has been quite un- 
disturbed, we may trace the whole series of these, from the 
angular, irregular outer one, through successively included 
ones in which the shape becomes gradually rounded, ending 
finally in a spherical nucleus. On comparing the original 
mass of stone with this group of concentric coats, each of 
which differs from the rest in form, and probably in the state 
of decomposition at which it has arrived, we get a marked 
illustration of the multiformity k> which, in lapse of time, 
a uniform body may be brought by external chemical 
action. The instability of the homogeneous is equally 

seen in the changes set up throughout the interior of a mass, 
when it consists of units that are not rigidly bound together. 
The atoms of a precipitate never remain separate, and equably 
distributed through the fluid in which they make their ap- 
pearance. They aggregate either into crystalline grains, 
each containing an immense number of atoms, or they aggre- 
gate into flocculi, each containing a yet larger number ; and 
where the mass of fluid is great, and the process prolonged, 
these flocculi do not continue equi-distant, but break up into 
groups. That is to say, there is a destruction of the balance 
at first subsisting among the diffused particles, and also of 
the balance at first subsisting among the groups into which 
these particles unite. Certain solutions of non 

crystalline substances in highly volatile liquids, exhibit in 
the course of half an hour a whole series of changes that aro 
set up in the alleged way. If for example a little shell-lac- 
varnish (made by dissolving shell-lac in coal-naptha until it 
is of the consistence of cream) be poured on a piece of paper, 



404 THE INSTABILITY OF THE HOMOGENEOUS. 

the surface of the varnish will shortly become marked by 
polygonal divisions, which, first appearing round the edge o 
the mass, spread towards its centre. Under a lense these 
irregular polygons of five or more sides, are seen to be sever- 
ally bounded by dark lines, on each side of which there are 
light- coloured borders. By the addition of matter to their 
inner edges, the borders slowly broaden, and thus encroach 
on the areas of the polygons; until at length there re- 
mains nothing but a dark spot in the centre of each. At 
the same time the boundaries of the polygons become curved ; 
and they end by appearing like spherical sacs pressed toge- 
ther ; strangely simulating (but only simulating) a group of 
nucleated cells. Here a rapid loss of homogeneity is ex- 
hibited in three ways : — First, in the formation of the film, 
which is the seat of these changes ; second, in the formation 
of the polygonal sections into which this film divides ; and 
third, in the contrast that arises between the polygonal sec- 
tions round the edge, where they are small and early formed, 
and those in the centre which are larger and formed later. 

The instability thus variously illustrated is obviously con- 
sequent on the fact, that the several parts of any homoge- 
neous aggregation are necessarily exposed to different forces 
— forces that differ either in kind or amount ; and being ex- 
posed to different forces they are of necessity differently 
modified. The relations of outside and inside, and of com- 
parative nearness to neighbouring sources of influence, imply 
the reception of influences that are unlike in quantity or 
quality, or both ; and it follows that unlike changes will be 
produced in the parts thus dissimilarly acted upon. 

For like reasons it is manifest that the process must re- 
peat itself in each of the subordinate groups of units that are 
differentiated by the modifying forces. Each of these sub- 
ordinate groups, like the original group, must gradually, in 
obedience to the influences acting upon it, lose its balance ot 
parts — must pass from a uniform into a multiform state. 
And so on continuously. Whence indeed it is cleai 



i 



THE INSTABILITY OF THE HOMOGENEOUS. 406 

that not only must the homogeneous lapse into the non- 
aomogeneous, but that the more homogeneous must tend 
ever to become less homogeneous. If any given whole, in- 
stead of being absolutely uniform throughout, consist of parts 
distinguishable from each other — if each of these parts, while 
somewhat unlike other parts, is uniform within itself; then, 
each of them being in unstable equilibrium, it follows that 
while the changes set up within it must render it multiform, 
they must at the same time render the whole more multi- 
form than before. The general principle, now to be follow- 
ed out in its applications, is thus somewhat more compre- 
hensive than the title of the chapter implies. No demurrer to 
the conclusions drawn, can be based on the ground that perfect 
homogeneity nowhere exists ; since, whether that state with 
which we commence be or be not one of perfect homogeneity, 
the process must equally be towards a relative heterogeneity. 

§ 150. The stars are distributed with a three-fold irre- 
gularity. There is first the marked contrast between the 
plane of the milky way and other parts of the heavens, in 
respect of the quantities of stars within given visual areas. 
There are secondary contrasts of like kind in the milky way 
itself, which has its thick and thin places ; as well as 
throughout the celestial spaces in general, which are much 
more closely strown in some regions than in others. And 
there is a third order of contrasts produced by the aggrega- 
tion of stars into small clusters. Besides this heterogeneity 
of distribution of the stars in general, considered without 
distinction of kinds, a further such heterogeneity is disclosed 
when they are classified by their differences of colour, which 
doubtless answer to differences of physical constitution 
While the yellow stars are found in all parts of the heavens 
the red and blue stars are not so : there are wide regions in 
which both red and blue stars are rare ; there are regions in 
which the blue occur in considerable numbers, and there 
are other regions in which the red are comparatively abund- 



406 THE INSTABILITY OF THE HOMOGENEOUS. 

ant. Yet one more irregularity of like significance is pre- 
sented by the nebulas, — aggregations of matter which, what- 
ever be their nature, most certainly belong to our sidereal 
system. For the nebulae are not dispersed with anything 
like uniformity ; but are abundant around the poles of the 
galactic circle and rare in the neighbourhood of its 
plane. ISTo one will expect that anything like a de- 

finite interpretation of this structure can be given on the 
hypothesis of Evolution, or any other hypothesis. The most 
that can be looked for is some reason for thinking that irre- 
gularities, not improbably of these kinds, would occur in the 
course of Evolution, supposing it to have taken place. Any 
one called on to assign such reason might argue, that if the 
matter of which stars and all other celestial bodies consist, be 
assumed to have originally existed in a diffused form through- 
out a space far more vast even than that which our sidereal 
system now occupies, the instability of the homogeneous 
would negative its continuance in that state. In default of 
an absolute balance among \Jie forces with which the dis- 
persed particles acted on each other (which could not exist in 
any aggregation having limits) he might show that motion 
and consequent changes of distribution would necessarily 
result. The next step in the argument would be that in 
matter of such extreme tenuity and feeble cohesion there 
would be motion towards local centres of gravity, as well as 
towards the general centre of gravity ; just as, to use a 
humble illustration, the particles of a precipitate aggregate 
into nocculi at the same time that they sink towards the 
earth. He might urge that in the one case as in the other, 
these smallest and earliest local aggregations must gradually 
divide into groups, each concentrating to its own centre of 
gravity, — a process which must repeat itself on a larger and 
larger scale. In conformity with the law that motion once 
set up in any direction becomes itself a cause of subsequent 
motion in that direction, he might further infer that the 
heterogeneities thus set up would tend ever to become more 



THE INSTABILITY OF THE HOMOGENEOUS. 407 

pronounced. Established mechanical principles would 
ustify him in the conclusion that the motions of these irre- 
gular masses of slightly aggregated nebular matter towards 
their common centre of gravity must be severally rendered 
urvelinear, by the resistance of the medium from which they 
ere precipitated; and that in consequence of the irregu- 
arities of distribution already set up, such conflicting curve- 
inear motions must, by composition of forces, end in a rotation 
f the incipient sidereal system. He might without difficulty 
show that the resulting centrifugal force must so far modify the 
process of general aggregation, as to prevent anything like 
uniform distribution of the stars eventually formed — that 
there must arise a contrast such as we see between the galac- 
tic circle and the rest of the heavens. He might draw the 
further not unwarrantable inference, that differences in the 
process of local concentration would probably result from the 
unlikeness between the physical conditions existing around 
the general axis of rotation and those existing elsewhere. 
To which he might add, that after the formation of distinct 
stars, the ever-increasing irregularities of distribution due to 
continuance of the same causes would produce that patchi- 
ness which distinguishes the heavens in both its larger and 
smaller areas. ~We need not here however commit 

ourselves to such far-reaching speculations. For the purposes 
of the general argument it is needful only to show, that 
any finite mass of diffused matter, even though vast enough 
to form our wdiole sidereal system, could not be in stable 
equilibrium ; that in default of absolute sphericity, absolute 
uniformity of composition, and absolute symmetry of relation 
to all forces external to it, its concentration must go on with 
an ever-increasing irregularity ; and that thus the present 
aspect of the heavens is not, so far as we can judge, incon- 
gruous with the hypothesis of a general evolution consequent 
on the instability of the homogeneous. 

Descending to that more limited form of the nebular hy- 
pothesis which regards the solar system as having resulted 



408 THE INSTABILITY OF THE HOMOGENEOUS. 

by gradual concentration ; and assuming this concentration 
to have advanced so far as to produce a rotating spheroid of 
nebulous matter ; let us consider what further consequence 
the instability of the nomogeneous necessitates. Having 
become oblate in figure, unlike in the densities of its centre 
and surface, unlike in their temperatures, and unlike in the 
velocities with which its parts move round their common axis, 
such a mass can no longer be called homogeneous ; and 
therefore any further changes exhibited by it as a whole, can 
illustrate the general law, only as being changes from a 
more homogeneous to a less homogeneous state. Changes of 
this kind are to be found in the transformations of such of its 
parts as are still homogeneous within themselves. If we 
accept the conclusion of Laplace, that the equatorial portion 
of this rotating and contracting spheroid will at successive 
stages acquire a centrifugal force great enough to prevent 
any nearer approach to the centre round which it rotates, 
and will so be left behind by the inner parts of the spheroid 
in its still- continued contraction ; we shall find, in the fate of 
the detached ring, a fresh exemplification of the principle we 
are following out. Consisting of gaseous matter, such a 
ring, even if absolutely uniform at the time of its detach- 
ment, cannot continue so. To maintain its equilibrium there 
must be an almost perfect uniformity in the action of all 
external forces upon it (almost, we must say, because the 
cohesion, even of extremely attenuated matter, might suffice 
to neutralize very minute disturbances) ; and against this the 
probabilities are immense. In the absence of equality among 
the forces, internal and external, acting on such a ring, 
there must be a point or points at which the cohesion of 
its parts is less than elsewhere— a point or points at which 
rupture will therefore take place. Laplace assumed, that 
the ring would rupture at one place only ; and would then 
collapse on itself. But this is a more than questionable 
assumption — such at least I know to be the opinion of an 
authority second to none among those now living. So 



THE INSTABILITY OF THE HOMOGENEOUS. 4QO, 

aat a ring, consisting of matter having such, feeble cohe- 
sion, must break up into many parts. Nevertheless, it is 
still inferable from the instability of the homogeneous, 
that the ultimate result which Laplace predicted would 
take place. For even supposing the masses of nebulous 
matter into which such a ring separated, were so equal in 
their sizes and distances as to attract each other with 
exactly equal forces (which is infinitely improbable): yet 
the unequal action of external disturbing forces would 
inevitably destroy their equilibrium— there would be one or 
more points at which adjacent masses would begin to part 
company. Separation once commenced, would with ever- 
accelerating speed lead to a grouping of the masses. And 
obviously a like result would eventually take place with the 
groups thus formed ; until they at length aggregated into a 
single mass. 

Leaving the region of speculative astronom\ r , let us con- 
sider the Solar System as it at present exists. And here it 
will be well, in the first place, to note a fact which may be 
thought at variance with the foregoing argument — namely, 
the still- continued existence of Saturn's rings ; and especially 
of the internal nebulous ring lately discovered. To the 
objection that the outer rings maintain their equilibriiun, the 
reply is that the comparatively great cohesion of liquid 
or solid substance would suffice to prevent any slight tend- 
ency to rupture from taking effect. And that a nebulous 
ring here still preserves its continuity, does not really negative 
the foregoing conclusion; since it happens under the quite 
exceptional influence of those symmetrically disposed forces 
which the external rings exercise on it. Here indeed 

it deserves to be noted, that though at first sight the Satur- 
nian system appears at variance with the doctrine that a 
state of homogeneity is one of unstable equilibrium, it docs 
in reality furnish a carious confirmation of this doctrine. For 
Saturn is not quite concentric with his rings ; and it has 
been proved mathematically that were he and his rings con- 
19 



410 THE INSTABILITY OF THE HOMOGENEOUS. 

centrically situated, they] could not remain so : the homo- 
geneous relation being unstable, would gravitate into a 
heterogeneous one. And this fact serves to remind us of the 
allied one presented throughout the whole Solar System. All 
orbits, whether of planets or satellites, are more or less ex- 
centric — none of them are perfect circles; and were thej 
perfect circles they would soon become ellipses. Mutual per- 
turbations would inevitably generate excentricities. That is 
to say, the homogeneous relations would lapse into hetero- 
geneous ones. 

§ 151. Already so many references have been made to the 
gradual formation of a crust over the originally incandescent 
Earth, that it may be thought superfluous again to name it. 
It has not, however, been before considered in connexion with 
the general principle under discussion. Here then it must 
be noted as a necessary consequence of the instability of the 
homogeneous. In this cooling down and solidification ol 
the Earth's surface, we have one of the simplest, as well as 
one of the most important, instances, of that change from 
a uniform to a multiform state which occurs in any mass 
through exposure of its different parts to different condi- 
tions. To the differentiation of the Earth's exterior 
from its interior thus brought about, we must add one of the 
most conspicuous differentiations which the exterior itself 
afterwards undergoes, as being similarly brought about. "Were 
the conditions to which the surface of the Earth is exposed, 
alike in all directions, there would be no obvious reason why 
certain of its parts should become permanent! j r unlike the rest. 
But being unequally exposed to the chief external centre of 
force — the Sun — its main divisions become unequally modified : 
as the crust thickens and cools, there arises that contrast, 
now so decided, between the polar and equatorial regions. 

Along with these most marked physical differentiations of 
the Earth, which are manifestly consequent on the instability 
of the homogeneous, there have been going on numerous 






THE INSTABILITY OF THE HOMOGENEOUS. 411 

chemical differentiations, admitting of similar interpreta- 
tion. "Without raising the question whether, as some think, 
the so-called simple substances are themselves compounded of 
unknown elements (elements which we cannot separate by 
artificial heat, but which existed separately when the heat of 
the Earth was greater than any which we can produce), — 
without raising this question, it will suffice the present pur- 
pose to show how, in place of that comparative homogeneity 
of the Earth's crust, chemically considered, which must have 
existed when its temperature was high, there has arisen, 
during its cooling, an increasing chemical heterogeneity: 
each element or compound, being unable to maintain its 
homogeneity in presence of various surrounding affinities, 
having fallen into heterogeneous combinations. Let us con- 
template this change somewhat in detail. There is 
every reason to believe that at an extreme heat, the bodies 
we call elements cannot combine. Even under such heat as 
can be generated artificially, some very strong affinities yield ; 
and the great majority of chemical compounds are decom- 
posed at much lower temperatures. Whence it seems not 
improbable that, when the Earth was in its first state of in- 
candescence, there were no chemical combinations at all. 
But without drawing this inference, let us set out with the 
unquestionable fact that the compounds which can exist at 
the highest temperatures, and which must therefore have 
been the first formed as the Earth cooled, are those of the 
simplest constitutions. The protoxides — including under 
that head the alkalies, earths, &c. — are, as a class, the most 
fixed compounds known : the majority of them resisting de- 
composition by any heat we can generate. These, consisting 
severally of one atom of each component element, are com- 
binations of the simplest order — are but one degree less 
homogeneous than the elements themselves. More hetero- 
geneous than these, more decomposable by heat, and therefore 
later in the Earth's history, are the deutoxides, tritoxides, 
peroxides, &c. ; in which two, three, four, or more atoms of 



412 THE INSTABILITY OF THE HOMOGENEOUS. 

oxygen are united with one atom of metal or other base. 
Still less able to resist heat, are the salts ; which present us 
with compound atoms each made up of five, six, seven, eight, 
ten, twelve, or more atoms, of three, if not more, kinds. 
Then there are the hydrated salts, of a yet greater hetero- 
geneity, which undergo partial decomposition at much lower 
temperatures. After them come the further-complicated 
supersalts and double salts, having a stability again decreased ; 
arid so throughout. After making a few unimportant quali- 
fications demanded by peculiar affinities, I believe no chemist 
will deny it to be a general law of these inorganic combina- 
tions that, other things equal, the stability decreases as the 
complexity increases. And then when we pass to the com- 
pounds that make up organic bodies, we find this general law 
still further exemplified: we find much greater complexity 
and much less stability. An atom of albumen, for instance, 
consists of 482 ultimate atoms of five different kinds. Fibrine, 
still more intricate in constitution, contains in each atom, 298 
atoms of carbon, 49 of nitrogen, 2 of sulphur, 228 of hydrogen, 
and 92 of oxygen — in all, 6G0 atoms ; or, more strictly 
speaking — equivalents. And these two substances are so un- 
stable as to decompose at quite moderate temperatures ; as 
that to which the outside of a joint of roast meat is 
exposed. Possibly it will be objected that some inorganic 
compounds, as phosphuretted hydrogen and chloride of nitro- 
gen, are more decomposable than most organic compounds. 
This is true. But the admission may be made without damage 
to the argument. The proposition is not that all simple com- 
binations are more fixed than all complex ones. To establish 
our inference it is necessary only to show that, as an average 
fact, the simple combinations can exist at a higher tempera- 
ture than the complex ones. And this is wholly beyond 
question. Thus it is manifest that the present chemi- 

cal heterogeneity of the Earth's surface has arisen by degrees 
as the decrease of heat has permitted ; and that it has shown 
itself in three forms — first, in the multiplication of chemical 



THE INSTABILITY OF THE HOMOGENEOUS. 41o* 

compounds ; second, in the greater number of different ele- 
ments contained in the more modern of these compounds ; and 
third, in the higher and more varied multiples in which these 
more numerous elements combine. 

Without specifying them, it will suffice just to name the 
meteorologic processes eventually set up in the Earth's at- 
mosphere, as further illustrating the alleged law. They 
equally display that destruction of a homogeneous state which 
results from unequal exposure to incident forces. 

§ 152. Take a mass of unorganized but organizable mat- 
ter — either the body of one of the lowest living forms, or the 
germ of one of the higher. Consider its circumstances. 
Either it is immersed in water or air, or it is contained with- 
in a parent organism. Wherever placed, however, its outer 
and inner parts stand differently related to surrounding 
agencies — nutriment, oxygen, and the various stimuli. But 
this is not all. Whether it lies quiescent at the bottom of 
the water or on the leaf of a plant ; whether it moves through 
the water preserving some definite attitude ; or whether it is 
in the inside of an adult ; it equally results that certain parts 
of its surface are more exposed to surrounding agencies than 
other parts — in some cases more exposed to light, heat, or 
oxygen, and in others to the maternal tissues and their con- 
tents. Hence must follow the destruction of its original 
equilibrium. This may take place in one of two ways. Either 
the disturbing forces may be such as to overbalance the 
affinities of the organic elements, in which case there result 
those changes which are known as decomposition ; or, as is 
ordinarily the case, such changes are induced as do not de- 
stroy the organic compounds, but only modify them : the 
parts most exposed to the modifying forces being most modi- 
tied. To elucidate this, suppose we take a few cases. 

Note first what appear to be exceptions. Certain minute 
animal forms present us either with no appreciable differen- 
tiations or with differentiations so obscure as to be made out 



414 THE INSTABILITY OF THE HOMOGENEOUS. 

with great difficulty. In the Rhizopods, the substance of the 
jelly-like body remains throughout life unorganized, even to 
the extent of haying no limiting membrane ; as is proved by 
the fact that the thread-like processes protruded by the mass 
coalesce on touching each other. "Whether or not the nearly 
allied Amceba, of which the less numerous and more bulky 
processes do not coalesce, has, as lately alleged, something 
like a cell- wall and a nucleus, it is clear that the distinction 
of parts is very slight ; since particles of food pass bodily into 
the inside through any part of the periphery, and since when 
the creature is crushed to pieces, each piece behaves as the 
whole did. Now these cases, in which there is either no contrast 
of structure between exterior and interior or very little, though 
seemingly opposed to the above inference, are really very 
significant evidences of its truth. For what is the peculiarity 
of this division of the Protozoa ? Its members undergo per- 
petual and irregular changes of form— they show no per- 
sistent relation of parts. What lately formed a portion of 
the interior is now protruded, and, as a temporary limb, is 
attached to some object it happens to touch. What is now a 
part of the surface will presently be drawn, along with the 
atom of nutriment sticking to it, into the centre of the mass. 
Either the relations of inner and outer have no permanent 
existence, or they are very slightly marked. But by the 
hypothesis, it is only because of their unlike positions with 
respect to modifying forces, that the originally like units of a 
living mass become unlike. We must therefore expect no 
established differentiation of parts in creatures which exhibit 
no established differences of position in their parts ; and we 
must expect extremely little differentiation of parts where the 
differences of position are but little determined — which is 
iust what we find. This negative evidence is borne 

out by positive evidence. When we turn from these pro- 
teiform specks of living jelly to organisms having an un- 
changing distribution of substance, we find differences of tis- 
sue corresponding to differences of relative position. In all 



THE INSTABILITY OF THE HOMOGENEOUS. 415 

the higher Protozoa, as also in the ProtopJiyta, we meet with 
a fundamental differentiation into cell-membrane and cell- 
contents ; answering to that fundamental contrast of con- 
ditions implied by the terms outside and inside. On 
passing from what are roughly classed as unicellular organ- 
isms, to the lowest of those which consist of aggregated cells, 
we equally observe the connection between structural differ- 
ences and differences of circumstance. Negatively, we see 
that in the sponge, permeated throughout by currents of sea- 
water, the indefiniteness of organization corresponds with the 
absence of definite unlikeness of conditions : the peripheral 
and central portions are as little contrasted in structure as in 
exposure to surrounding agencies. While positively, we see 
that in a form like the Thalassicolla, which, though equally 
1 humble, maintains its outer and inner parts in permanently 
unlike circumstances, there is displayed a rude structure 
obviously subordinated to the primary relations of centre and 
surface : in all its many and important varieties, the parts 
exhibit a more or less concentric arrangement. 

After this primary modification, by which the outer tissues 
are differentiated from the inner, the next in order of con- 
stancy and importance is that by which some part of the 
outer tissues is differentiated from the rest ; and this corre- 
sponds with the almost universal fact that some part of the 
outer tissues is more exposed to certain environing influences 
than the rest. Here, as before, the apparent exceptions are 
extremely significant. Some of the lowest vegetal organisms, 
as the Hematococci and Protococci, evenly imbedded in a 
mass of mucus, or dispersed through the Arctic snow, display 
no differentiations of surface ; the several parts of their sur 
faces being subjected to no definite contrasts of condition 2 . 
Ciliated spheres such as the Vohox have no parts of thc'i 
periphery unlike other parts ; and it is not to be expected 
that they should have ; since, as they revolve in all directions, 
they do not, in traversing the water, permanently expose any 
part to special conditions. But when we come to organisms 



41 G THE INSTABILITY OF THE HOMOGENEOUS. 

that are either fixed, or while moving preserve definite atti- j 
tudes, we no longer find uniformity of surface. The most 
general fact which can be asserted with respect to the struc- 
tures of plants and animals, is, that however much alike in 
shape and texture the various parts of the exterior may at 
first be, they acquire unlikenesses corresponding to the un- 
likenesses of their relations to surrounding agencies. The cili- 
ated germ of a Zoophyte, which, during its locomotive stage, 
is distinguishable only into outer and inner tissues, no sooner 
becomes fixed, than its upper end begins to assume a different 
structure from its lower. The disc-shaped gemmce of the 
3Iarcha?itia, originally alike on both surfaces, and falling at 
random with either side uppermost, immediately begin to 
develop rootlets on the under side, and stomata on the upper 
side : a fact proving beyond question, that this primary differ- 
entiation is determined by this fundamental contrast of con- 
ditions. 

Of course in the germs of higher organisms, the metamor- 
phoses immediately due to the instability of the homogeneous, 
are soon masked by those due to the assumption of the hered- 
itary type. Such early changes, however, as are common to 
all classes of organisms, and so cannot be ascribed to heredity, 
entirely conform to the hypothesis. A germ which has un- 
dergone no developmental modifications, consists of a spher- 
oidal group of homogeneous cells. Universally, the first step 
in its evolution is the establishment of a difference between 
some of the peripheral cells and the cells which form the in- 
terior — some of the peripheral cells, after repeated sponta- 
neous fissions, coalesce into a membrane ; and by continuance 
of the process this membrane spreads until it speedily invests 
the entire mass, as in mammals, or, as in birds, stops short of 
that for some time. Here we have two significant facts. 
The first is, that the primary unlikeness arises between the 
exterior and the interior. The second is, that the change 
which thus initiates development, does not take place simul- 
taneously over the whole exterior ; but commences at one 



THE INSTABILITY OF THE HOMOGENEOUS. 417 

place, and gradually involves the rest. Now these facts 
are just those which might be inferred from the instability of 
the homogeneous. The surface must, more than any other 
part, become unlike the centre, because it is most dissimi- 
larly conditioned ; and all parts of the surface cannot 
simultaneously exhibit this differentiation, because they can- 
not be exposed to the incident forces with absolute uniform- 
ity. One other general fact of like implication re- 
mains. Whatever be the extent of this peripheral layer of 
cells, or blastoderm as it is called, it presently divides into 
two layers — the serous and mucous ; or, as they have been 
otherwise called, the ectoderm and the endoderm. The first 
of these is formed from that portion of the layer which lies 
in contact with surrounding agents ; and the second of them 
is formed from that portion of the layer which lies in contact 
with the contained mass of yelk. That is to say, after the 
primary differentiation, more or less extensive, of surface 
from centre, the resulting superficial portion undergoes a 
secondary differentiation into inner and outer parts — a 
differentiation which is clearly of the same order with the 
preceding, and answers to the next most marked contrast of 
conditions. 

But, as already hinted, this principle, understood in the 
simple form here presented, supplies no key to the detailed 

t phenomena of organic development. It fails entirely to ex- 
plain generic and specific peculiarities ; and indeed leaves us 
equally in the dark respecting those more important dis- 

, tinctions by which families and orders are marked out. 
Why two ova, similarly exposed in the same pool, should 

; become the one a fish, and the other a reptile, it cannot tell 
u<. That from two different eggs placed under the same 

| hen, should respectively come forth a duckling and a chicken, 

1 is a fact not to be accounted for on the hj'pothcsis above 
developed. We have here no alternative but to fall back 
upon the unexplained principle of hereditary transmission. 
The capacity possessed by an unorganized germ of unfolding 



418 THE INSTABILITY OF THE HOMOGENEOUS 

into a complex adult, which repeats ancestral traits in the 
minutest details, and that even when it has been placed in 
conditions unlike those of its ancestors, is a capacity we cannot 
at present understand. That a microscopic portion of seem- 
ingly structureless matter should embody an influence of such 
k : .nd, that the resulting man will in fifty years after become 
gouty or insane, is a truth which would be incredible were it 
not daily illustrated. Should it however turn out, as 

we shall hereafter find reason for suspecting, that these complex 
differentiations which adults exhibit, are themselves the 
slowly accumulated and transmitted results of a process like 
that seen in the first changes of the germ ; it will follow that 
even those embryonic changes due to hereditary influence, 
are remote consequences of the alleged law. Should it be 
shown that the slight modifications wrought during life on 
each adult, and bequeathed to offspring" along with all like 
preceding modifications, are themselves unlikenesses of parts 
that are produced by unlikenesses of conditions ; then it will 
follow that the modifications displayed in the course of em- 
bryonic development, are partly direct consequences of the 
instability of the homogeneous, and partly indirect conse- 
quences of it. To give reasons for entertaining this 
hypothesis, however, is not needful for the justification of the 
position here taken. It is enough that the most conspicuous 
differentiations which incipient organisms universally displa}% 
correspond to the most marked differences of conditions to 
which their parts are subject. It is enough that the habitual 
contrast between outside and inside, which we know is pro- 
duced in inorganic masses by unlikeness of exposure to inci- 
dent forces, is strictly paralleled by the first contrast that 
makes its appearance in all organic masses. 

It remains to point out that in the assemblage of organisms 
constituting a species, the principle enunciated is equally 
traceable. We have abundant materials for the induction 
that each species will not remain uniform, but is ever becom- 
ing to some extent multiform ; and there is ground for the 



THE INSTABILITY OF THE HOMOGENEOUS. 419 

deduction that this lapse from homogeneity to heterogeneity is 
caused by the subjection of its members to unlike sets of 
circumstances. The fact that in every species, animal and 
vegetal, the individuals are never quite alike ; joined with 
the fact that there is in every species a tendency to the pro- 
duction of differences marked enough to constitute varieties ; 
form a sufficiently wide basis for the induction. While the 
deduction is confirmed by the familiar experience that varieties 
are most numerous and decided where, as among cultivated 
plants and domestic animals, the conditions of life depart 
from the original ones, most widely and in the most numerous 
ways. "Whether we regard "natural selection" as wholly, 
or only in part, the agency through which varieties are 
established, matters not to the general conclusion. For as 
the survival of any variety proves its constitution to be in 
harmony with a certain aggregate of surrounding forces — as 
i the multiplication of a variety and the usurpation by it of an 
area previously occupied by some other part of the species, 
implies different effects produced by such aggregate of forces 
on the two, it is clear that this aggregate of forces is the 
real cause of the differentiation — it is clear that if the variety 
supplants the original species in some localities but not in 
others, it does so because the aggregate of forces in the one 
locality is unlike that in the other — it is clear that the lapse 
of the species from a state of homogeneity to a state of hetero- 
geneity arises from the exposure of its different parts to 
different aggregates of forces. 

§ 153. Among mental phenomena it is difficult to establish 
the alleged law without an analysis too extensive for the 
occasion. To show satisfactorily how states of consciousness, 
originally homogeneous, become heterogeneous through dif- 
ferences in the changes wrought by different forces, would 
require us carefully to trace out the organization of early 
experiences. Were this done it would become manifest that 
/ the development of intelligence, is, under one of its chief 



420 THE INSTABILITY OF THE HOMOGENEOUS. 

aspects, a dividing into separate classes, the unlike things 
previously confounded together in one class — a formation of 
sub-classes and sub-sub-classes, until the once confused ag- 
gregate of objects known, is resolved into an aggregate which 
unites extreme heterogeneity among its multiplied groups, 
with complete homogeneity among the members of each 
group. If, for example, we followed, through ascending grades 
of creatures, the genesis of that vast structure of knowledge 
acquired by sight, we should find that in the first stage, 
where eyes suffice for nothing beyond the discrimination of 
light from darkness, the only possible classifications of objects 
seen, must be those based on the manner in which light is 
obstructed, and the degree in which it is obstructed. We 
should find that by such undeveloped visual organs, the 
shadows traversing the rudimentary retina would be merely 
distinguished into those of the stationary objects which 
the creature passed during its own movements, and those 
of the moving objects which came near the creature while 
it was at rest ; and that so the extremely general clas- 
sification of visible things into stationary and moving, would 
be the earliest formed. We should find that whereas the 
simplest eyes are not fitted to distinguish between an obstruc- 
tion of light caused by a small object close to, and an obstruc- 
tion caused by a large object at some distance, eyes a little 
more developed must be competent to such a distinction; 
whence must result a vague differentiation of the class of 
moving objects, into the nearer and the more remote. We 
should find that such further improvements in vision as those 
which make possible a better estimation of distances by 
adjustment of the optic axes, and those which, through en- 
. largement and subdivision of the retina, make possible the dis- 
crimination 01 shapes, must have the effects of giving greater 
definiteness to the classes already formed, and of sub-dividing 
these into smaller classes, consisting of objects less unlike. And 
we should find that each additional refinement of the percep- 
tive organs, must similarly lead to a multiplication of divisions 



THE INSTABILITY OF THE HOMOGENEOUS. 421 

h 

ai-d a sharpening of the limits of each division. In every infant 
might be traced the analogous transformation of a confused 
aggregate of impressions of surrounding objects, not recognized 
as differing in their distances, sizes, and shapes, into separate 
classes of objects unlike each other in these and various other 
respects. And in the one case as in the other, it might be 
shown that the change from this first indefinite, incoherent 
and comparatively homogeneous consciousness, to a definite, 
coherent, and heterogeneous one, is due to differences in the 
actions of incident forces on the organism. These 

brief indications of what might be shown, did space permit, 
must here suffice. Probably they will give adequate clue to 
an argument by which each reader may satisfy himself that 
the course of mental evolution offers no exception to the 
general law. In further aid of such an argument, I will here 
add an illustration that is comprehensible apart from the 
process of mental evolution as a whole. 

It has been remarked (I am told by Coleridge, though I 
have been unable to find the passage) that with the advance 
of language, words which were originally alike in their 
meanings acquire unlike meanings — a change which he 
expresses by the formidable word " desynonyrnization." 
Among indigenous words this loss of equivalence cannot 
be clearly shown ; because in them the divergencies of 
meaning began before the dawn of literature. But among 
words that have been coined, or adopted from other 
languages, since the writing of books commenced, it is 
demonstrable. In the old divines, miscreant is used in 
its etymological sense of unbeliever ; but in modern speech it 
has entirely lost this sense. Similarly with evil-doer and 
malefactor: exactly synonymous as these are by derivation, 
they are no longer synonymous by usage : by a mahf actor 
tve now understand a convicted criminal, which is far from 
being the acceptation of evil-doer. The verb produce, bears in 
Euclid its primary meaning— to prolong, or draw out ; but 
the now largely developed meanings of produce ha\e little in 



122 THE INSTABILITY OF THE HOMOGENEOUS. 

common with the meanings of prolong, or draw out. In the 
Church of England liturgy, an odd effect results from the 
occurrence of prevent in its original sense — to come before, 
instead of its modern specialized sense — to come before with the 
effect of arresting. But the most conclusive cases are those 
in which the contrasted words consist of the same parts differ- 
ently combined ; as in go under and undergo. We go under 
a tree, and we undergo a pain. But though, if analytically 
considered, the meanings of these expressions would be the 
same were the words transposed, habit has so far modified 
their meanings that we could not without absurdity speak of 
undergoing a tree and going under a pain. Countless 

such instances might be brought to show that between two 
words which are originally of like force, an equilibrium can 
not be maintained. Unless they are daily used in exactly 
equal degrees, in exactly similar relations (against which 
there are infinite probabilities), there necessarily arises a habit 
of associating one rather than the other with particular acts, 
or objects. Such a habit, once commenced, becomes confirm- 
ed ; and gradually their homogeneity of meaning disappears. 
In each individual we may see the tendency which inevitably 
leads to this result. A certain vocabulary and a certain set 
of phrases, distinguish the speech of each person : each per- 
son habitually uses certain words in places where other words 
are habitually used by other persons ; and there is a con- 
tinual recurrence of favourite expressions. This inability to 
maintain a balance in the use of verbal symbols, which cha- 
racterizes every man, characterizes, by consequence, aggre- 
gates of men ; and the desynonymization of words is the ulti- 
mate effect. 

Should any difficulty be felt in understanding how these 
mental changes exemplify a law of physical transformations 
that are wrought by physical forces, it will disappear on con- 
templating acts of mind as nervous functions. It will be 
seen that each loss of equilibrium above instanced, is a loss of 
functional equality between some two elements of the nervous 



THE INSTABILITY OF THE HOMOGENEOUS. 423 

aj'slem. And it will be seen that, as in other cases, this loss 
of functional equality is due to differences in the incidence of 
forces. 

§ 154. Masses of men, in common with all other masses, 
show a like proclivity similarly caused. * Small combinations 
and large societies equally manifest it ; and in the one, as in 
the other, both governmental and industrial differentiations 
are initiated by it. Let us glance at the facts under these 
two heads. 

A business partnership, balanced as the authorities of its 
members may theoretically be, practically becomes a union in 
which the authority of one partner is tacitly recognized as 
greater than that of the other or others. Though the share- 
holders have given equal powers to the directors of their 
company, inequalities of power soon arise among them ; and 
usually the supremacy of some one director grows so marked, 
that his decisions determine the course which the board takes. 
Nor in associations for political, charitable, literary, or other 
purposes, do we fail to find a like process of division into 
dominant and subordinate parties ; each having its leader, its 
members of less influence, and its mass of uninfluential mem- 
bers. These minor instances in which unorganized groups of 
men, standing in homogeneous relations, may be watched 
gradually passing into organized groups of men standing in 
heterogeneous relations, give us the key to social inequalities. 
Barbarous and civilized communities are alike characterized 
by separation into classes, as well as by separation of each 
class into more important and less important units ; and this 
structure is manifestly the gradually-consolidated result of a 
process like that daily exemplified in trading and other com- 
binations. So long as men are constituted to act on one an- 
other, either by physical force or by force of character, the 
struggles for supremacy must finally be decided in favour ot 
some one ; and the difference once commenced must tend to 
Decome ever more marked. Its unstable equilibrium being de- 



124r THE INSTABILITY OF THE HOMOGENEOUS. 

Btro) eel, the uniform must gravitate with increasing rapidity 
into the multiform. And so supremacy and subordination 
must establish themselves, as we see they do, throughout the 
whole structure of a society, from the great class- divisions 
pervading its entire body, down to village cliques, and even 
down to every posse of school-boys. Probably it will 

be objected that such changes result, not from the homoge- 
neity of the original aggregations, but from their non-homo- 
geneity — from certain slight differences existing among their 
units at the outset. This is doubtless the proximate cause. 
In strictness, such changes must be regarded as transforma- 
tions of the relatively homogeneous into the relatively hetero- 
geneous. But it is abundantly clear that an aggregation of 
men, absolutely alike in their endowments, would eventually 
undergo a similar transformation. For in the absence of 
perfect uniformity in the lives severally led by them — in 
their occupations, physical conditions, domestic relations, and 
trains of thought and feeling — there must arise differences 
among them ; and these must finally initiate social differen- 
tiations. Even inequalities of health caused by accidents, 
must, by entailing inequalities of physical and mental power, 
disturb the exact balance of mutual influences among the 
units; and the balance once disturbed, must inevitably be 
lost. "Whence, indeed, besides seeing that a body of men 
absolutely homogeneous in their governmental relations, must, 
like all other homogeneous bodies, become heterogeneous, 
we also see that it must do this from the same ultimate cause 
—unequal exposure of its parts to incident forces. 

The first industrial divisions of societies are much more 
obviously due to unlikenesses of external circumstances: 
8uch divisions are absent until such unlikenesses are estab- 
lished. Nomadic tribes do not permanently expose any 
groups of their members to special local conditions ; nor does 
u stationary tribe, when occupying only a small area, main- 
tain from generation to generation marked contrasts in the 
local conditions of its members ; and in such tribes there are 



THE INSTABILITY OF THE HOMOGENEOUS. 425 

no decided economical differentiations. But a community 
which, growing populous, has overspread a large tract, and 
has become so far settled that its members live and die in their 
respective districts, keeps its several sections in different 
physical circumstances ; and then they no longer remain alike 
in their occupations. Those who live dispersed continue to 
hunt or cultivate the earth ; those who spread to the sea-shore 
fall into maritime occupations ; while the inhabitants of some 
spot chosen, perhaps for its centrality, as one of periodical 
assemblage, become traders, and a town springs up. Each 
of these classes undergoes a modification of character conse- 
quent on its function, and better fitting it to its function. 
Later in the process of social evolution these local adapt- 
ations are greatly multiplied. A result of differences in 
soil and climate, is that the rural inhabitants in different 
parts of the kingdom have their occupations partially special- 
ized ; and become respectively distinguished as chiefly pro- 
ducing cattle, or sheep, or wheat, or oats, or hops, or cyder. 
People living where coal-fields are discovered are transform- 
ed into colliers ; Cornishmen take to mining because Corn- 
wall is metalliferous ; and the iron-manufacture is the domi- 
nant industry where iron-stone is plentiful. Liverpool 
has assumed the office of importing cotton, in consequence of 
its proximity to the district where cotton goods are made ; 
and for analogous reasons, Hull has become the chief port at 
which foreign wools are brought in. Even in the establish- 
ment of breweries, of dye-works, of slate-quarries, of brick - 
, yards, we may see the same truth. So that both in general 
and in detail, the specializations of the social organism which 
characterize separate districts, primarily depend on local 
circumstances. Those divisions of labour which under an- 
i other aspect were interpreted as due to the setting up of motion 
' in the directions of least resistance (§ 80), are here in- 
terpreted as due to differences in the incident forces ; and 
the two interpretations are quite consistent with each 
, othnr. For that which in each case determines the direction 



426 THE INSTABILITY OF THE HOMOGENEOUS. 

of least resistance, is the distribution of the forces to be over- 
come ; and hence unlikenesses of distribution in separate 
localities, entails unlikenesses in the course of human action 
in those localities — entails industrial differentiations. 

§ 155. It has still to be shown that this general truth is 
demonstrable a priori. We have to prove specifically that 
the instability of the homogeneous is a corollary from the 
persistence of force. Already this has been tacitly implied 
by assigning unlikeness in the exposure of its parts to 
surrounding agencies, as the reason why a uniform mass loses 
its uniformity. But here it will be proper to expand this 
tacit implication into definite proof. 

On striking a mass of matter with such force as either to 
indent it or make it fly to pieces, we see both that the blow 
affects differently its different parts, and that the differences 
are consequent on the unlike relations of its parts to the 
force impressed. The part with which the striking body 
comes in contact, receiving the whole of the communicated 
momentum, is driven in towards the centre of the mass. 
It thus compresses and tends to displace the more centrally 
situated portions of the mass. These, however, cannot be 
compressed or thrust out of their places without pressing on 
all surrounding portions. And when the blow is violent 
enough to fracture the mass, we see, in the radial dispersion 
of its fragments, that the original momentum, in being dis- 
tributed throughout it, has been divided into numerous minor 
momenta, unlike in their directions. We see that these di- 
rections are determined by the positions of the parts with re- 
spect to each other, and with respect to the point of impact. 
We see that the parts are differently affected by the disrup- 
tive force, because they are differently related to it in their 
directions and attachments — that the effects being the joint 
products of the cause and the conditions, cannot be alike in 
parts which are differently conditioned. A body on 

which radiant heat is falling, exemplifies this truth still more 



TV12 INSTABILITY OF THE HOMOGENEOUS. 427 

dearly. Taking the simplest case (that of a sphere) wo see 
that while the part nearest to the radiating centre receives 
the rays at right angles, the rays strike the other parts of the 
exposed side at all angles from 90° down to 0°. Again, the 
molecular vibrations propagated through the mass from the 
surface which receives the heat, must proceed inwards at an- 
gles differing for each point. Further, the interior parts of 
the sphere affected by the vibrations proceeding from all 
points of the heated side, must be dissimilarly affected in pro- 
portion as their positions are dissimilar. So that whether 
they be on the recipient area, in the middle, or at the remote 
side, the constituent atoms are all thrown into states of vibra- 
tion more or less unlike each other. 

But now, what is the ultimate meaning of the conclusion 
that a uniform force produces different changes throughout a 
uniform mass, because the parts of the mass stand in different 
relations to the force ? Fully to understand this, we must 
contemplate each part as simultaneously subject to other 
forces — those of gravitation, of cohesion, of molecular motion, 
&c. The effect wrought by an additional force, must be a 
resultant of it and the forces already in action. If the forces 
already in action on two parts of any aggregate, are different in 
their directions, the effects produced on these two parts by like 
forces must be different in their directions. "Why must they be 
different ? They must be different because such unlikeness as 
exists between the two sets of factors, is made by the presence 
in the one of some specially- directed force that is not pre- 
sent in the other; and that this force will produce an 
effect, rendering the total result in the one case unlike that 
in the other, is a necessary corollary from the persistence of 
force. Still more manifest docs it become that the dis- 

similarly-placed parts of any aggregate must be dissimilarly 
modified by an incident force, when we remember that the 
quantities of the incident force to which they are severally 
subject, are not equal, as above supposed ; but are nearly al- 
ways very unequal. The outer parts of masses are usually 



428 THE INSTABILITY OF THE HOMOGENEOUS.. 

alone exposed to chemical actions ; and not only are their 
inner parts shielded from the affinities of external elements, 
but such affinities are brought to bear unequally on their 
surfaces ; since chemical action sets up currents through the 
medium in which it takes place, and so brings to the various 
parts of the surface unequal quantities of the active agent. 
A gain, the amounts of any external radiant force which the 
different parts of an aggregate receive, are widely contrasted : 
we have the contrast between the quantity falling on the 
side next the radiating centre, and the quantity, or rather no 
quantity, falling on the opposite side ; we have contrasts in 
the quantities received by differently- placed areas on the 
exposed side ; and we have endless contrasts between the 
quantities received by the various parts of the interior. Simi- 
larly when mechanical force is expended on any aggregate, 
cither by collision, continued pressure, or tension, the amounts 
of strain distributed throughout the mass are manifestly 
unlike for unlike positions. But to say the different parts of 
an aggregate receive different quantities of any incident force, 
is to say that their states are modified by it in different 
degrees — is to say that if they were before homogeneous in 
their relations they must be rendered to a proportionate 
extent heterogeneous ; since, force being persistent, the 
different quantities of it falling on the different parts, 
must work in them different quantities of effect — different 
changes. Yet one more kindred deduction is required 

to complete the argument. "We may, by parallel reasoning, 
reach the conclusion that, even apart from the action of any ex- 
ternal force, the equilibrium of a homogeneous aggregate must 
be destroyed by the unequal actions of its parts on each other. 
That mutual influence which produces aggregation (not to 
mention other mutual influences) must work different effects 
on the different parts ; since they are severally exposed to it 
in unlike amounts and directions. This will be clearly seen 
on remembering that the portions of which the whole is made 
up, may be severally regarded as minor "wholes ; that on each of 



THE INSTABILITY OF THE HOMOGENEOUS. 420 

these minor wholes, the action of the entire aggregate then 
becomes an external incident force ; that such external inci- 
dent force must, as above shown, work unlike changes in the 
parts of any such minor whole ; and that if the minor wholes 
are severally thus rendered heterogeneous, the entire aggre- 
gate is rendered heterogeneous. 

The instability of the homogeneous is thus deducible from 
that primordial truth which underlies our intelligence. One 
stable homogeneity only, is hypothetically possible. If centres 
of force, absolutely uniform in their powers, were diffused 
with absolute uniformity through unlimited space, they would 
remain in equilibrium. This however, though a verbally 
intelligible supposition, is one that cannot be represented in 
thought ; since unlimited space is inconceivable. But all 
finite forms of the homogeneous — all forms of it which we 
can know or conceive, must inevitably lapse into hetero- 
geneity. In three several ways does the persistence of force 
necessitate this. Setting external agencies aside, each unit 
of a homogeneous whole must be differently affected from 
any of the rest by the aggregate action of the rest upon it. 
The resultant force exercised by the aggregate on each unit, 
being in no two cases alike in both amount and direction, and 
usually not in either, any incident force, even if uniform in 
amount and direction, cannot produce like effects on the units. 
And the various positions of the parts in relation to any in- 
cident force, preventing them from receiving it in uniform 
amounts and directions, a further difference in the effects 
wrought on them is inevitably produced. 

One further remark is needed. To the conclusion that 
the changes with which Evolution commences, are thus ne- 
cessitated, remains to be added the conclusion that these 
changes must continue. The absolutely homogeneous must 
lose its equilibrium ; and the relatively homogeneous must 
lapse into the relatively less homogeneous. That which 
is true of any total mass, is true of the parts into which 
it segregates. The uniformity of each such part must 



430 THE INSTABILITY OF THE HOMOGENEOUS. 

as inevitably be lost in multiformity, as was that of the 
original whole ; and for like reasons. And thus the continued 
changes which characterize Evolution, in so far as they are 
constituted by the lapse of the homogeneous into the hetero- 
geneous, and of the less heterogeneous into the more hetero- 
geneous, are necessary consequences of the persistence of 
force, 



CHAPTER XX. 

THE MULTIPLICATION OF EFFECTS. 

§ 156. To the cause of increasing complexity set forth in 
the last chapter, we have in this chapter to add another. 
Though secondary in order of time, it is scarcely secondary in 
order of importance. Even in the absence of the cause 
already assigned, it would necessitate a change from the 
homogeneous to the heterogeneous ; and joined with it, it 
makes this change both more rapid and more involved. To 
come in sight of it, we have but to pursue a step further, 
that conflict between force and matter already delineated. 
Let us do this. 

When a uniform aggregate is subject to a uniform force, 
we have seen that its constituents, being differently condi- 
tioned, are differently modified. But while we have con- 
templated the various parts of the aggregate as thus undergo- 
ing unlike changes, we have not yet contemplated the unlike 
changes simultaneously produced on the various parts of the 
incident force. These must be as numerous and important as 
the others. Action and re-action being equal and opposite, it 
follows that in differentiating the parts on which it falls in 
unlike ways, the incident force must itself be correspond- 
ingly differentiated. Instead of being as before, a uniform 
force, it must thereafter be a multiform force — a group of 
lissimilar furces. A few illustrations will make this truth 
nanifest. 



432 THE MULTIPLICATION OF EFFECTS. 

A single force is divided by conflict with matter into 
forces that widely diverge. In the case lately cited, of a 
body shattered by violent collision, besides the change of the 
homogeneous mass into a heterogeneous group of scattered 
fragments, there is a change of the homogeneous momentum 
into a group of momenta, heterogeneous in both amounts 
and directions. Similarly with the forces we know as light 
and heat. After the dispersion of these by a radiating body 
towards all points, they are re-dispersed towards all points 
by the bodies on which they fall. Of the Sun's rays, issu- 
ing from him on every side, some few strike the Moon. 
These being reflected at all angles from the Moon's sur- 
face, some few of them strike the Earth. By a like 
process the few which reach the Earth are again dif- 
fused through surrounding space. And on each occasion, 
such portions of the rays as are absorbed instead of re- 
flected, undergo refractions that equally destroy their 
parallelism. More than this is true. By conflict 

with matter, a uniform force is in part changed into forces 
differing in their directions ; and in part it is changed into 
forces differing in their kinds. When one body is struck 
against another, that which we usually regard as the effect, 
is a change of position or motion in one or both bodies. But 
a moment's thought shows that this is a very incomplete 
view of the matter. Besides the visible mechanical result, 
sound is produced ; or, to speak accurately, a vibration in 
one or both bodies, and in the surrounding air : and under 
some circumstances we call this the effect. Moreover, the 
air has not simply been made to vibrate, but has had currents 
raised in it by the transit of the bodies. Further, if there is 
not that great structural change which we call fracture, there 
is a disarrangement of the particles of the two bodies around 
their point of collision ; amounting in some cases to a visible 
condensation. Yet more, this condensation is accompanied 
by disengagement of heat. In some cases a spark — that is, 
light — results, from the incandescence of a portion struck 



THE MULTIPLICATION OF EFFECTS. 433 

off; and occasionally this incandescence is associated with 
chemical combination. Thus, by the original mechanical 
force expended in the collision, at least five, and often more, 
different kinds of forces have been produced. Take, again, 
the lighting of a candle. Primarily, this is a chemical 
change consequent on a rise of temperature. The process of 
combination having once been set going by extraneous heat, 
there is a continued formation of carbonic acid, water, &c. — 
in itself a result more complex than the extraneous heat that 
first caused it. But along with this process of combination 
there is a production of heat ; there is a production of light ; 
there is an ascending column of hot gases generated ; there 
are currents established in the surrounding air. Nor does 
the decomposition of one force into many forces end here. 
Each of the several changes worked becomes the parent of 
further changes. The carbonic acid formed, will by and by 
combine with some base ; or under the influence of sunshine 
give up its carbon to the leaf of a plant. The water will 
modify the hygrometric state of the air around ; or, if the 
current of hot gases containing it come against a cold body, 
will be condensed: altering the temperature, and perhaps 
the chemical state, of the surface it covers. The heat given 
out melts the subjacent tallow, and expands whatever it 

i warms. The light, falling on various substances, calls forth 
from them reactions by which it is modified ; and so divers 
colours are produced. Similarly even with these secondary 
actions, which may be traced out into ever-multiplying 
ramifications, until they become too minute to be appreci- 
ated. Universally, then, the effect is more complex 
than the cause. Whether the aggregate on which it falls be 
homogeneous or otherwise, an incident force is transformed 
by the conflict into a number of forces that differ in their 
amounts, or directions, or kinds ; or in all these respects. 
And of this group of variously-modified forces, each ulti- 

I mately undergoes a like transformation. 

Let us now mark how the process of evolution is furthcT-ed 



434 THE MULTIPLICATION OF EFFECTS. 

by this multiplication of effects. An incident force decom« 
posed by the reactions of a body into a group of unlike forces 
— a uniform force thus reduced to a multiform force — be- 
comes the cause of a secondary increase of multiformity in 
ihe body which, decomposes it. In the last chapter we saw 
that the several parts of an aggregate are differently modi- 
fied by any incident force. It has just been shown that by the 
reactions of the differently modified parts, the incident force 
itself must be divided into differently modified partd. Here 
it remains to point out that each differentiated division of 
the aggregate, thus becomes a centre from which a differen- 
tiated division of the original force is again diffused. And 
since unlike forces must produce unlike results, each of these 
differentiated forces must produce, throughout the aggregate, 
a further series of differentiations. This secondary 

cause of the change from homogeneity to heterogeneity, 
obviously becomes more potent in proportion as the hetero- 
geneity increases. "When the parts into which any evolving 
whole has segregated itself, have diverged widely in nature, 
they will necessarily react very diversely on any incident 
force — they will divide an incident force into so many 
strongly contrasted groups of forces. And each of them be- 
coming the centre of a quite distinct set of influences, must 
add to the number of distinct secondary changes wrought 
throughout the aggregate. Yet another corollary 

must be added. The number of unlike parts of which an 
aggregate consists, as well as the degree of their unlikeness, 
is an important factor in the process. Every additional 
specialized division is an additional centre of specialized 
forces. If a uniform whole, in being itself made multiform 
by an incident force, makes the incident force multiform ; if 
a whole consisting of two unlike sections, divides an incident 
force into two unlike groups of multiform forces ; it is clear 
that each new unlike section must be a further source of com- 
plication among the forces at work throughout the mass— a 
further source of heterogeneity. The multiplication of i 



THE MULTIPLICATION OF EFFECTS. 435 

effects must proceed in geometrical progression. Each stage 
of evolution must initiate a higher stage. 

§ 157. The force of aggregation acting on irregular masses 
of rare matter, diffused through a resisting medium, will not 
cause such masses to move in straight lines to their common 
centre of gravity ; but, as before said, each will take a curvi- 
linear path, directed to one or other side of the centre of 
gravity. All of them being differently conditioned, gravita- 
tion will impress on each a motion differing in direction, in 
velocity, and in the degree of its curvature — uniform aggre- 
gative force will be differentiated into multiform momenta. 
The process thus commenced, must go on till it produces a 
single mass of nebulous matter ; and these independent curvi- 
linear motions must result in a movement of this mass round 
its axis : a simultaneous condensation and rotation in which 
we see how two effects of the aggregative force, at first but 
slightly divergent, become at last widely differentiated. A 
gradual increase of oblateness in this revolving spheroid, must 
take place through the joint action of these two forces, as the 
bulk diminishes and the rotation grows more rapid ; and this 
we may set down as a third effect. The genesis of heat, which 
must accompany augmentation of density, is a consequence 
of yet another order — a consequence by no means simple ; 
since the various parts of the mass, being variously condensed, 
must be variously heated. Acting throughout a gaseous 
spheroid, of which the parts are unlike in their temperatures, 
the forces of aggregation and rotation must work a further 
series of changes : they must set up circulating currents, 
both general and local. At a later stage light as well as heat 
will be generated. Thus without dwelling on the likelihood 
of chemical combinations and electric disturbances, it is suf- 
ficiently manifest that, supposing matter to have originally 
existed in a diffused state, the once uniform force which 
caused its aggregation, must have become gradually divided 
into different forces ; and that each further stage of compli- 



436 THE MULTIPLICATION OF EFFECTS. 

cation in the resulting aggregate, must have initiated furthet 
subdivisions of this force — a further multiplication of effects, 
increasing the previous heterogeneity. 

This section of the argument may however be adequately 
sustained, without having recourse to any such hypothetical 
illustrations as the foregoing. The astronomical attributes 
of the Earth, will even alone suffice our purpose. Consider 
first the effects of its momentum round its axis. There is the 
oblateness of its form ; there is the alternation of day and 
night ; there are certain constant marine currents ; and 
there are certain constant aerial currents. Consider next 
the secondary series of consequences due to the divergence 
of the Earth's plane of rotation from the plane of its orbit. 
The many differences of the seasons, both simultaneous 
and successive, which pervade its surface, are thus caused. 
External attraction acting on this rotating oblate spheroid 
with inclined axis, produces the motion called nutation, and 
that slower and larger one from which follows the precession of 
the equinoxes, with its several sequences. And then by this 
same force are generated the tides, aqueeus and atmospheric. 

Perhaps, however, the simplest way of showing the multi- 
plication of effects among phenomena of this order, will be to 
set down the influences of any member of the Solar System on 
the rest. A planet directly produces in neighbouring planets 
certain appreciable perturbations, complicating those other- 
wise produced in them ; and in the remoter planets it directly 
produces certain less visible perturbations. Here is a first 
series of effects. But each of the perturbed planets is itself a 
source of perturbations — each directly affects all the others. 
Hence, planet A having drawn planet B out of the position 
it would* have occupied in A's absence, the perturbations 
which B causes are different from what they would else 
have been ; and similarly with C, D, E, &c. Here then is a 
secondary series of effects : far more numerous though far 
smaller in their amounts. As these indirect perturbations 
must to some extent modify the movements of each planet, 



THE MULTIPLICATION OF EFFECTS. 437 

there results from tliem a tertiary series ; and so oil contin- 
ually. Thus the force exercised by any planet works a dif- 
ferent effect on each of the rest ; this different effect is from 
each as a centre partially broken up into minor different 
effects on the rest ; and so on in ever multiplying and dimin- 
ishing waves throughout the entire system. 

§ 158 If the Earth was formed by the concentration/ of 
diffused matter, it must at first have been incandescent ; and 
whether the nebular hypothesis be accepted or not, this ori- 
ginal incandescence of the Earth must now be regarded as in- 
ductively established — or, if not established, at least rendered 
so probable that it is a generall}- admitted geological doctrine. 
Several results of the gradual cooling of the Earth — as the 
formation of a crust, the solidification of sublimed elements, 
the precipitation of water, &c, have been already noticed — 
and I here again refer to them merely to point out that they 
are simultaneous effects of the one cause, diminishing heat. 
Let us now, however, observe the multiplied changes afterwards 
arising from the continuance of this one cause. The 

Earth, falling in temperature, must contract. Hence the solid 
crust at any time existing, is presently too large for the 
shrinking nucleus ; and being unable to support itself, inevit- 
ably follows the nucleus. But a spheroidal envelope cannot 
sink down into contact with a smaller internal spheroid, with- 
out disruption : it will run into wrinkles, as the rind of an 
apple does when the bulk of its interior decreases from eva- 
poration. As the cooling progresses and the envelope thick- 
ens, the ridges -consequent on these contractions must become 
crreater ; rising ultimately into hills and mountains ; and the 
later systems of mountains thus produced must not only be 
higher, as we find them to be, but they must be longer, as we 
also find them to be. Thus, leaving out of view other modi- 
fying forces, we see what immense heterogeneity of surface 
arises from the one cause, loss of heat — a heterogeneity which 
the telescope shows us to be paralleled on the Moon, where aque- 



438 THE MULTIPLICATION OF EFFECTS. 

ou3 and atmospheric agencies have been absent. But 

we have yet to notice another kind of heterogeneity of 
surface, similarly and simultaneously caused. While the 
Earth's crust was still thin, the ridges produced by its con- 
traction must not only have been small, but the tracts between 
them must have rested with comparative smoothness on the 
subjacent liquid spheroid ; and the water in those arctic and 
antarctic regions where it first condensed, must have been 
evenly distributed. But as fast as the crust grew thicker 
and gained corresponding strength, the lines of fracture from 
time to time caused in it, necessarily occurred at greater dis- 
tances apart ; the intermediate surfaces followed the contract- 
ing nucleus with less uniformity ; and there consequently 
resulted larger areas of land and water. If any one, after 
wrapping an orange in wet tissue paper, and observing both 
how small are the wrinkles and how evenly the intervening 
spaces lie on the surface of the orange, will then wrap it in 
thick cartridge-paper, and note both the greater height of the 
ridges and the larger spaces throughout which the paper does 
not touch the orange, he will realize the fact, that as the 
Earth's solid envelope thickened, the areas of elevation and 
depression became greater. In place of islands more or less 
homogeneously scattered over an all-embracing sea, there must 
have gradually arisen heterogeneous arrangements of conti- 
nent and ocean, such as we now know. This double 
change in the extent and in the elevation of the lands, in- 
volved yet another species of heterogeneity — that of coast-line. 
A tolerably even surface raised out of the ocean will have a 
simple, regular sea-margin ; but a surface varied by table- 
lands and intersected by mountain- chains, will, when raised 
out of the ocean, have an outline extremely irregular, alike 
in its leading features and in its details. Thus endless is the 
accumulation of geological and geographical results slowly 
brought about by this one cause — the escape of the Earth's 
primitive heat. 

When we pass from the agency which geologists term ig- 



THE MULTIPLICATION OF EFFECTS. 439 

neous, to aqueous and atmospheric agencies, we see a like 
ever-growing complication of effects. The denuding actions 
of air and water have, from the beginning, been modifying 
every exposed surface : everywhere working many different 
changes. As already shown (§ 69) the original source of those 
gaseous and fluid motions which effect denudation, is the solar 
heat. The transformation of this into various modes of force, 
according to the nature and condition of the matter on which 
it falls, is the first stage of complication. The sun's rays, 
striking at all angles a sphere, that from moment to moment 
presents and withdraws different parts of its surface, and each 
of them for a different time daily throughout the year, would 
produce a considerable variety of changes even were the 
sphere uniform. But falling as they do on a sphere sur- 
rounded by an atmosphere in some parts of which wide areas 
of cloud are suspended, and which here unveils vast tracts of 
sea, there of level land, there of mountains, there of snow and 
ice, they initiate in its several parts countless different move- 
ments. Currents of air of all sizes, directions, velocities, and 
temperatures, are set up ; as are also marine currents simi- 
larly contrasted in their characters. In this region the sur- 
face is giving off water in the state of vapour ; in that, dew 
is being precipitated ; and in the other rain is descending — 
differences that arise from the ever-changing ratio between 
the absorption and radiation of heat in each place. At one 
hour, a rapid fall in temperature leads to the formation of ice, 
with an accompanying expansion throughout the moist 
bodies frozen ; while at another, a thaw unlocks the dislocated 
fragments of these bodies. And then, passing to a second 
stage of complication, we see that the many kinds of motion 
directly or indirectly caused by the sun's rays, severally pro- 
duce results that vary with the conditions. Oxidation, 
drought, wind, frost, rain, glaciers, rivers, waves, and other 
denuding agents effect disintegrations that are determined in 
their amounts and qualities by local circumstances. Acting 
upon a tract of granite, such agents here work scarcely an 



440 THE MULTIPLICATION OF EFFECTS. 

appreciable effect ; there cause exfoliations of the surface, and 
a resulting heap of debris and boulders ; and elsewhere, after 
decomposing the feldspar into a white clay, carry away this 
with the accompanying quartz and mica, and deposit them 
in separate beds, fluviatile and marine. When the exposed 
land consists of several unlike formations, sedimentary and 
igneous, changes proportionably more heterogeneous are 
wrought. The formations being disintegrate in different de- 
grees, there follows an increased irregularity of surface. The 
areas drained by different rivers being differently constituted, 
these rivers carry down to the sea unlike combinations of 
ingredients ; and so sundry new strata of distinct composition 
arise. And here indeed we may see very simply illustrated, 
the truth, that the heterogeneity of the effects increases in a 
geometrical progression, with the heterogeneity of the object 
acted upon. A continent of complex structure, presenting 
many strata irregularly distributed, raised to various levels, 
tilted up at all angles, must, under the same denuding agen- 
cies, give origin to immensely multiplied results : each dis- 
trict must be peculiarly modified ; each river must carry 
down a distinct kind of detritus ; each deposit must be differ- 
ently distributed by the entangled currents, tidal and other, 
which wash the contorted shores ; and every additional com • 
plication of surface must be the cause of more than one ad- 
ditional consequence. But not to dwell on these, let us, 
for the fuller elucidation of this truth in relation to the inor- 
ganic world, consider what would presently follow from some 
extensive cosmical revolution — say the subsidence of Central 
America. The immediate results of the disturbance would 
themselves be sufficiently complex. .Besides the numberless 
dislocations of strata, the ejections of igneous matter, the 
propagation of earthquake vibrations thousands of miles 
around, the loud explosions, and the escape of gases, there 
would be the rush of the Atlantic and Pacific Oceans to sup- 
ply the vacant space, the subsequent recoil of enormous 
waves, which would traverse both these oceans and produce 



THE MULTIPLICATION OF EFFECTS. 4H 

myriads of changes along their shores, the corresponding at- 
mospheric waves complicated by the currents surrounding each 
volcanic vent, and the electrical discharges with which such 
disturbances are accompanied. But these temporary effects 
woidd be insignificant compared with the permanent ones. 
The complex currents of the Atlantic and Pacific would be 
altered in directions and amounts. The distribution of heat 
achieved by these currents would be different from what it is. 
The arrangement of the isothermal lines, not only on the 
neighbouring continents, but even throughout Europe, would 
be changed. The tides would flow differently from what 
they do now. There would be more or less modification of 
the winds in their periods, strengths, directions, qualities. 
Rain would fall scarcely anj'where at the same times and in 
the same quantities as at present. In short, the meteorolo- 
gical conditions thousands of miles off, on all sides, would be 
more or less revolutionized. In these many changes, each of 
which comprehends countless minor ones, the reader will see 
the immense heterogeneity of the results wrought out b}^ one 
force, when that force expends itself on a previously compli- 
cated area ; and he will readily draw the corollary that from 
the beginning the complication has advanced at an increasing 
rate. 

i 

§ 159. We have next to trace throughout organic evolu 
tion, this same all- pervading principle. And here, where 
i the transformation of the homogeneous into the heterogeneous 
' was first observed, the production of many changes by one 
I cause is least eas} r to demonstrate. The development of a seed 
into a plant, or an ovum into an animal, is so gradual ; while 
| the forces which determine it are so involved, and at the same 
1 time so unobtrusive ; that it is difficult to detect the multipli- 
cation of effects which is elsewhere so obvious. ^Nevertheless, 
by indirect evidence we may establish our proposition ; spite 
of the lack of direct evidence. 

Observe, first, how numerous arc the changes which any 



14ii THE MULTIPLICATION OF EFFECTS. 

marked stimulus works on an adult organism — -a human being, 
for instance. An alarming sound or sight, besides impressions 
on the organs of sense and the nerves, may produce a start, a 
scream, a distortion of the face, a trembling consequent on 
general muscular relaxation, a burst of perspiration, an excited 
action of the heart, a rush of blood to the brain, followed 
possibly by arrest of the heart's action and by syncope ; and 
if the system be feeble, an illness with its long train of 
complicated symptoms may set in. Similarly in cases of 
disease. A minute portion of the small-pox virus introduced 
into the system, will, in a severe case, cause, during the first 
stage, rigors, heat of skin, accelerated pulse, furred tongue, 
loss of appetite, thirst, epigastric uneasiness, vomiting, head- 
ache, pains in the back and limbs, muscular weakness, con- 
vulsions, delirium, &c. ; in the second stage, cutaneous erup- 
tion, itching, tingling, sore throat, swelled fauces, salivation, 
cough, hoarseness, dyspnoea, &c. ; and in the third stage, 
cedcmatous inflammations, pneumonia, pleurisy, diarrhoea, 
inflammation of the brain, ophthalmia, erysipelas, &c. : each 
of which enumerated symptoms is itself more or less complex. 
Medicines, special foods, better air, might in like manner be 
instanced as producing multiplied results. Eow it 

needs only to consider that the many changes thus wrought 
by one force on an adult organism, must be partially paral- 
leled in an embryo-organism, to understand how here also 
the production of many effects by one cause is a source of 
increasing heterogeneity. The external heat and other 
agencies which determine the first complications of the germ, 
will, by acting on these, superinduce further complications ; 
on these still higher and more numerous ones ; and so on 
continually : each organ as it is developed, serving, by its 
actions and reactions on the rest, to initiate new complexities. 
The first pulsations of the foetal heart must simultaneously 
aid the unfolding of every part. The growth of each tissue, 
by taking from the blood special proportions of elements, 
must modifv the constitution of the blood ; and so must 



THE MULTIPLICATION OF EFFECTS. 44 J 

modify the nutrition of all the other tissues. The distributive 
actions, implying as they do a certain waste, necessitate an 
addition to the blood of effete matters, which must influence 
the rest of the system, and perhaps, as some think, initiate 
the formation of excretory organs. The nervous connections 
established among the viscera must further multiply their 
mutual influences. And so with every modification of 
structure — every additional part and every alteration in the 
ratios of parts. Still stronger becomes the proof when 

we call to mind the fact, that the same germ may be evolved 
into different forms according to circumstances. Thus, dur- 
ing its earlier stages, every embryo is sexless — becomes either 
male or female as the balance of forces acting on it deter- 
mines. Again, it is well-known that the larva of a working- 
bee will develop into a queen-bee, if, before a certain period, 
its food be changed to that on which the larvae of queen-bees 
are fed. Even more remarkable is the case of certain 
entozoa. The ovum of a tape-worm, getting into the intes- 
tine of one animal, unfolds into the form of its parent ; but 
if carried into other parts of the system, or into the intestine 
of some unlike animal, it becomes one of the sac-like creatures, 
called by naturalists Cysticerci, or Coennri, or Ecliinococci 
— creatures so extremely different from the tape-worm 
in aspect and structure, that only after careful investiga- 
tions have they been proved to have the same origin. 
All which instances imply that each advance in embryonic 
, complication results from the action of incident forces on the 
complication previously existing. Indeed, the now 

i accepted doctrine of epigenesis necessitates the conclusion that 
» organic evolution proceeds after this manner. For since it is 
j proved that no germ, animal or vegetal, contains the slightest 
! rudiment, trace, or indication of the future organism — since 
the microscope has shown us that the first process set up in 
every fertilized germ is a process of repeated spontaneous 
' fissions, ending in the production of a mass of cells, not one 
j of which exhibits any special character ; there seems no 



444 T1IE MULTIPLICATION OF EFFECTS. 

alternative but to conclude that the partial organization at 
any moment subsisting in a growing embryo, is transformed 
by the agencies acting on it into the succeeding phase of 
organization, and this into the next, until, through ever- 
increasing complexities, the ultimate form is reach- 
ed. Thus, though the subtlety of the forces and the 
slowness of the metamorphosis, prevent us from directly 
tracing the genesis of many changes by one cause, throughout 
the successive stages which every embryo passes through ; 
yet, indirectly, we have strong evidence that this is a source 
of increasing heterogeneity. We have marked how multi- 
tudinous are the effects which a single agency may generate 
in an adult organism ; that a like multiplication of effects 
must happen in the unfolding organism, we have inferred 
from sundry illustrative cases ; further, it has been pointed 
out that the ability which like germs have to originate un 
like forms, implies that the successive transformations result 
from the new changes superinduced on previous changes ; 
and we have seen that structureless as every germ originally 
is, the development of an organism out of it is otherwise in- 
comprehensible. Doubtless we are still in the dark respect- 
ing those mysterious properties which make the germ, when 
subject to fit influences, undergo the special changes begin- 
ning this series of transformations. All here contended is, 
that given a germ possessing these mysterious properties, the 
evolution of an organism from it depends, in part, on that 
multiplication of effects which we have seen to be a cause of 
evolution in general, so far as we have yet traced it. 

When, leaving the development of single plants and ani- 
mals, we pass to that of the Earth's flora and fauna, the 
course of the argument again becomes clear and simple. 
Though, as before admitted, the fragmentary facts Palaeon- 
tology has accumulated, do not clearly warrant us in saying 
that, in the lapse of geologic time, there have been evolved 
more heterogeneous organisms, and more heterogeneous 
assemblages of organisms ; yet we shall now see that there 



THE MULTIPLICATION OF EFFECTS. ll^ 

must ever have been a tendency towards these results. We 
shall find that the "production of many effects by one cause, 
which, as already shown, has been all along increasing 
the physical heterogeneity of the Earth, has further neces- 
sitated an increasing heterogeneity in its flora and fauna, 
individually and collectively. An illustration will make this 
clear. Suppose that by a series of upheavals, occur- 

ring, as they are now known to do, at long intervals, the East 
Indian Archipelago were to be raised into a continent, and a 
chain of mountains formed along the axis of elevation. By 
the first of these upheavals, the plants and animals inhabit- 
ing Borneo, Sumatra, JNew Guinea, and the rest, would be 
subjected to slightly- modified sets of conditions. The climate 
in general would be altered in temperature, in humidity, and 
in its periodical variations ; while the local differences would 
be multiplied. These modifications would affect, perhaps 
inappreciably, the entire flora and fauna of the region. The 
change of level would produce additional modifications ; 
varying in different species, and also in different members of 
the same species, according to their distance from the axis of 
elevation. Plants, growing only on the sea-shore in special 
localities, might become extinct. Others, living only in 
swamps of a certain humidity, would, if they survived at all, 
probably undergo visible changes of appearance. "While 
more marked alterations would occur in some of the 
plants that spread over the lands newly raised above the 
sea. The animals and insects living on these modified plants, 
would themselves be in some degree modified by change of 
food, as well as by change of climate ; and the modification 
would be more marked where, from the dwindling or disap- 
pearance of one kind of plant, an allied kind was eaten. In 
the lapse of the many generations arising before the next up- 
heaval, the sensible or insensible alterations thus produced in 
each species, would become organized— in all the races that 
survived there would be a more or less complete adaptation 
to the new conditions. The next upheaval would superin- 



146 THE MULTIPLICATION OF EFFECTS. 

duce further organic changes, implying wider divergences 
from the primary forms ; and so repeatedly. Now however 
let it be observed that this revolution would not be a substi- 
tution of a thousand modified species for the thousand 
original species ; but in place of the thousand original species 
there would arise several thousand species, or varieties, or 
changed forms. Each species being distributed over an area 
of some extent, and tending continually to colonize the new 
area exposed, its different members would be subject to dif- 
ferent sets of changes. Plants and animals migrating to- 
wards the equator would not be affected in the same way 
with others migrating from it. Those which spread towards 
the new shores, would undergo changes unlike the changes 
undergone by those which spread into the mountains. Thus, 
each original race of organisms would become the root from 
which diverged several races, differing more or less from it and 
from each other ; and while some of these might subsequently 
disappear, probably more than one would survive in the next 
geologic period : the very dispersion itself increasing the 
chances of survival. Not only would there be certain modi- 
fications thus caused by changes of physical conditions and 
food ; but also in some cases other modifications caused by 
changes of habit. The fauna of each island, peopling, step 
by step, the newly-raised tracts, would eventually come in 
contact with the faunas of other islands ; and some members 
of these other faunas would be unlike any creatures before 
seen. Herbivores meeting with new beasts of prey, would, 
in some cases, be led into modes of defence or escape differ- 
ing from those previously used ; and simultaneously the 
beasts of prey would modify their modes of pursuit and 
attack. "We know that when circumstances demand it, such 
changes of habit do take place in animals ; and we know 
that if the new habits become the dominant ones, they 
must eventually in some degree alter the organiza- 
tion. Observe now, however, a further consequence. 
There must arise not simply a tendency towards the different 



THE MULTIPLICATION OF EFFECTS. 44? 

f iation of each race of organisms into several races ; but also 
a tendency to tlie occasional production of a somewhat higher 
organism. Taken in the mass, these divergent varieties, 
which have been caused by fresh physical conditions and 
habits of life, will exhibit alterations quite indefinite in kind 
and degree ; and alterations that do not necessarily consti- 
t ute an advance. Probably in most cases the modified type 
will be not appreciably more heterogeneous than the original 
one. But it must now and then occur, that some division of 
a species, falling into circumstances which give it rather 
more complex experiences, and demand actions somewhat 
more involved, will have certain of its organs further dif- 
ferentiated in proportionately small degrees — will become 
slightly more heterogeneous. Hence, there will from time 
to time arise an increased heterogeneity both of the Earth's 
flora and fauna, and of individual races included in them. 
Omitting detailed explanations, and allowing for the qualifi- 
cations which cannot here be specified, it is sufficiently clear 
that geological mutations have all along tended to complicate 
the forms of life, whether regarded separately or collectively. 
That multiplication of effects which has been a part-cause of 
the transformation of the Earth's crust from the simple into 
the complex, has simultaneously led to a parallel transforma- 
tion of the Life upon its surface.* 

The deduction here drawn from the established truths of 

* Had this paragraph, first published in the Westminster Review in 1857, been 
written after the appearance of Mr. Darwin's work on The Origin of Species, it 
would doubtless have been otherwise expressed. Reference would have been 
made to the process of " natural selection," as greatly facilitating the differenti- 
ations described. As it is, however, I prefer to let the passage stand in its origi- 
nal shape : partly because it seems to me that these successive changes of condi- 
tions would produce divergent varieties or species, apart from the influence of 
u natural selection" (though in less numerous ways as well as less rapidly) ; and 
partly because I conceive that in the absence of these successive changes of con- 
ditions, " natural selection" would effect comparatively little. Let me add that 
though thtse positions are not enunciated in The Origin of Species, yet a common 
friend gives me reason to think that Mr. Darwin would coincide in them ; if he 
did not indeed consider them as tacitly implied in hi> work. 



448 THE MULTIPLICATION OF EFFECTS. 

geology and the general laws of life, gains immensely in weight 
on finding it to be in harmony with an induction drawn from 
direct experience. Just that divergence of many races from 
one race, which we inferred must have been continually oc- 
curring during geologic time, we know to have occurred dur- 
ing the pre -historic and historic periods, in man and domestic 
animals. And just that multiplication of effects which we 
concluded must have been instrumental to the first, we see 
has in a great measure wrought the last. Single causes, as 
famine, pressure of population, war, have periodically led to 
further dispersions of mankind and of dependent creatures : 
each such dispersion initiating new modifications, new varieties 
of type. "Whether all the human races be or be not derived 
from one stock, philology makes it clear that whole groups of 
races, now easily distinguishable from each other, were origin- 
ally one race — that the diffusion of one race into different 
climates and conditions of existence has produced many 
altered forms of it. Similarly with domestic animals. Though 
in some cases (as that of dogs) community of origin will per- 
haps be disputed, yet in other cases (as that of the sheep or 
the cattle of our own country) it will not be questioned that 
local differences of climate, food, and treatment, have trans- 
formed one original breed into numerous breeds, now become 
so far distinct as to produce unstable hybrids. Moreover 
through the complication of effects flowing from single causes, 
we here find, what we before inferred, not only an increase of 
general heterogeneity, but also of special heterogeneity. 
While of the divergent divisions and subdivisions of the hu- 
man race, many have undergone changes not constituting an 
advance ; others have become decidedly more heterogeneous. 
The civilized European departs more widely from the verte- 
brate archetype than does the savage. 

§ 160. A sensation does not expend itself in arousing some 
single state of consciousness ; but the state of consciousness 
aroused is made up of various represented sensations connected 



THE MULTIPLICATION OF EFFECTS. 419 

by co- existence, or sequence with the presented sensation. 
And that, in proportion as the grade of intelligence is high, 
the number of ideas suggested is great, may be readily inferred. 
Let us, however, look at the proof that here too, each change 
is the parent of many changes ; and that the multiplication 
increases in proportion as the area affected is complex. 

^Vere some hitherto unknown bird, driven say by stress of 
weather from the remote north, to make its appearance on 
our shores, it would excite no speculation in the sheep or cat- 
tle amid which it alighted : a perception of it as a creature 
like those constantly flying about, would be the sole inter- 
ruption of that dull current of consciousness which accom- 
panies grazing and rumination. The cow-herd, by whom we 
may suppose the exhausted bird to be presently caught, would 
probably gaze at it with some slight curiosity, as being un- 
like any he had before seen — would note its most conspicuous 
markings, and vaguely ponder on the questions, where it 
came from, and how it came. The village bird-stuffer would 
have suggested to him by the sight of it, sundry forms to 
which it bore a little resemblance ; would receive from it more 
numerous and more specific impressions respecting structure 
and plumage ; would be reminded of various instances of 
birds brought by storms from foreign parts — would tell who 
found them, who stuffed them, who bought them. Suppos- 
ing the unknown bird taken to a naturalist of the old school, 
interested only in externals, (one of those described by the 
, late Edward Forbes, as examining animals as though they were 
merely skins filled with straw,) it would excite in him a more 
i involved series of mental changes : there would be an elabor- 
ate examination of the feathers, a noting of all their technical 
, distinctions, with a reduction of these perceptions to certain 
i equivalent written symbols ; reasons for referring the new 
form to a particular family, order, and genus would be sought 
out and written down ; communications with the secretary of 
^some society, or editor of some journal, would follow; ana 
probably there would be not a few thoughts about the addi* 



450 THE MULTIPLICATION OF EFFECTS. 

tion of the ii to the describer's name, to form the name of the 
species. Lastly, in the mind of a comparative anatomist, such 
a new species, should it happen to haye any marked internal 
peculiarity, might produce additional sets of changes — might 
very possibly suggest modified views respecting the relation- 
ships of the division to which it belonged ; or, perhaps, alter 
his conceptions of the homologies and developments of certain 
organs ; and the conclusions drawn might not improbably 
enter as elements into still wider inquiries concerning the 
origin of organic forms. 

From ideas let us turn to emotions. In a young child, a 
father's anger produces little else than vague fear — a disagree- 
able sense of impending evil, taking various shapes of physi- 
cal suffering or deprivation of pleasures. In elder children, 
the same harsh words will arouse additional feelings : some- 
times a sense of shame, of penitence, or of sorrow for hav- 
ing offended; at other times, a sense of injustice, and a 
consequent anger. In the wife, yet a further range of feel- 
ings may come into existence — perhaps wounded affection, 
perhaps self-pity for ill-usage, perhaps contempt for ground « 
less irritability, perhaps sympathy for some suffering which 
the irritability indicates, perhaps anxiety about an unknown 
misfortune which she thinks has produced it. Nor are we 
without evidence that among adults, the like differences of de- 
velopment are accompanied by like differences in the number 
of emotions that are aroused, in combination or rapid succes- 
sion — the lower natures being characterized by that impul- 
siveness which results from the uncontrolled action of a few 
feelings ; and the higher natures being characterized by the 
simultaneous action of many secondary feelings, modifying 
those first awakened. 

Possibly it will be objected that tne illustrations here given, 
are drawn from the functional changes of the nervous system, 
not from its structural changes ; and that what is proved 
among the first, does not necessarily hold among the last. 
Tnia must be admitted. Those, however, who recognize the 



THE MULTIPLICATION OF EFFECTS. J.,)l 

truth that the structural changes are the slowly accumulated 
results of the functional changes, will readily draw the corol- 
lary, that a part -cause of the evolution of the nervous system, 
as of other evolution, is this multiplication of effects which 
becomes ever greater as the development becomes higher. 

§ 1C1. If the advance of Man towards greater heterogene- 
ity in both body and mind, is in part traceable to the produc- 
tion of many effects by one cause, still more clearly may the 
advance of Society towards greater heterogeneity be so ex- 
plained. Consider the growth of an industrial organization. 
When, as must occasionally happen, some individual of a 
tribe displays unusual aptitude for making an article of gen- 
eral use (a weapon, for instance) which was before made by 
each man for himself, there arises a tendency towards the 
differentiation of that individual into a maker of weapons. 
His companions (warriors and hunters all of them) severally 
wish to have the best weapons that can be made ; and are 
therefore certain to offer strong inducements to this skilled 
individual to make weapons for them. He, on the other hand, 
having both an unusual faculty, and an unusual liking, for 
making weapons (the capacity and the desire for any occu- 
pation being commonly associated), is predisposed to fulfil 
these commissions on the offer of adequate rewards : espe- 
cially as his love of distinction is also gratified. This first 
specialization of function, once commenced, tends ever to be- 
come more decided. On the side of the weapon-maker, con - 
linued practice gives increased skill— increased superiority to 
his products. On the side of his clients, cessation of practice 
entails decreased skill. Thus the influences that determine 
this division of labour grow stronger in both ways: this 
i social movement tends ever to become more decided in the 
direction in which it was first set up ; and the incipient 
heterogeneity is, on the average of cases, likely to become 
^permanent for that generation, if no longer. Such a 

process, besides differentiating the social mas& into two parts, 



452 THE MULTIPLICATION OF EFFECTS. 

the one monopolizing, or almost monopolizing, the perform- 
ance of a certain function, and the other having lost the 
habit, and in some measure the power, of performing that 
function, has a tendency to initiate other differentiations. The 
advance described implies the introduction of barter : the 
maker of weapons has, on each occasion, to be paid in such 
other articles as he agrees to take in exchange. Now he will 
not habitually take in exchange one kind of article, but many 
kinds. He does not want mats only, or skins, or fishing- gear ; 
but he wants all these ; and on each occasion will bargain 
for the particular things he most needs. What follows ? If 
among the members of the tribe there exist any slight differ- 
ences of skill in the manufacture of these various things, as 
there are almost sure to do, the weapon- maker will take from 
each one the thing which that one excels in making : he will 
exchange for mats with him whose mats are superior, and 
will bargain for the fishing- gear of whoever has the best. 
But he who has bartered away his mats or his fishing-gear, 
must make other mats or fishing-gear for himself; and in so 
doing must, in some degree, further develop his aptitude. 
Thus it results that the small specialities of faculty possessed 
by various members of the tribe will tend to grow more de- 
cided. If such transactions are from time to time repeated, 
these specializations may become appreciable. And whether 
or not there ensue distinct differentiations of other individ- 
uals into makers of particular articles, it is clear that incipi- 
ent differentiations take place throughout the tribe : the one 
original cause produces not only the first dual effect, but a 
number of secondary dual effects, like in kind but minor in 
degree. This process, of which traces may be seen 

among groups of school-boys, cannot well produce a lasting 
distribution of functions in an unsettled tribe ; but where 
there grows up a fixed and multiplying community, such 
differentiations become permanent, and increase with each 
generation. An addition to the number of citizens, involv 
ing a greater demand for every commodity, intensifies the 



THE MULTIPLICATION OV LI FECTS. 453 

functional activity of each specialized person or class ; and 
this renders the specialization more definite where it al- 
ready exists, and establishes it where it is but nascent. By 
increasing the pressure on the means of subsistence, a larger 
population again augments these results ; since every individ- 
ual is forced more and more to confine himself to that which 
he can do best, and by which he can gain most. And this 
industrial progress, by aiding future production, opens the 
way for further growth of population, which reacts as be- 
fore. Presently, under the same stimuli, new occu- 
pations arise. Competing workers, severally aiming to pro- 
duce improved articles, occasionally discover better processes 
or better materials. In weapons and cutting- tools, the substi- 
tution of bronze for stone entails on him who first makes it, a 
great increase of demand — so great an increase that he pre- 
sently finds all his time occupied in making the bronze for the 
articles he sells, and is obliged to depute the fashioning of 
these articles to others ; and eventually the making of bronze, 
thus gradually differentiated from a pre-existing occupation, 
becomes an occupation by itself. But now mark the ramified 
ichanges which follow this change. Bronze soon replaces stone, 
not only in the articles it was first used for, but in many others ; 
and so affects the manufacture of them. Further, it affects the 
processes which such improved utensils subserve, and the re- 
sulting products — modifies buildings, carvings, dress, personal 
decorations. Yet again, it sets going sundry manufactures 
which were before impossible, from lack of a material fit for 
the requisite tools. And all these changes react on the peo- 
ple — increase their manipulative skill, their intelligence, their 
comfort — refine their habits and tastes. 

It is out of the question here to follow through its succes- 
sive complications, this increasing social heterogeneity that 
results from the production of many effects by one cause. 
But leaving the intermediate phases of social development, 
let us take an illustration from its passing phase. To trace 
the effects of steam-power, in its manifold applications to 



454j the multiplication of effects 

mining, navigation, and manufactures, would carry us into 
unmanageable detail. Let us confine ourselves to the latest- 
embodiment of steam-power — the locomotive engine. This, 
as the proximate cause of our railway-system, has changed 
the face of the country, the course of trade, and the habits of 
the people. Consider, first, the complicated sets of changes 
that precede the making of every railway — the provisional 
arrangements, the meetings, the registration, the trial- section, 
the parliamentary survey, the lithographed plans, the books 
of reference, the local deposits and notices, the application to 
Parliament, the passing Standing -Orders Committee, the first, 
second, and third readings : each of which brief heads indi- 
cates a multiplicity of transactions, and the further develop- 
ment of sundry occupations, (as those of engineers, surveyors, 
lithographers, parliamentary agents, share-brokers,) and the 
creation of sundry others (as those of traffic-takers, reference- 
takers). Consider, next, the yet more marked changes 
implied in railway construction — the cuttings, embankiugs, 
tunnellings, diversions of roads ; the. building of bridges and 
stations ; the laying down of ballast, sleepers, and rails ; the 
making of engines, tenders, carriages, and wagons : which 
processes, acting upon numerous trades, increase the import- 
ation of timber, the quarrying of stone, the manufacture of 
iron, the mining of coal, the burning of bricks ; institute a 
variety of special manufactures weekly advertised in the 
Railway Times ; and call into being some new classes of 
workers — drivers, stokers, cleaners, plate -layers, &c. &c. 
Then come the changes, more numerous and involved still, 
which railways in action produce on the community at large. 
The organization of every business is more or less modified; 
ease of communication makes it better to do directly what 
was before done by proxy ; agencies are established where 
previously they would not have paid ; goods are obtained 
from remote wholesale houses instead of near retail ones ; and 
commodities are used which distance once rendered inacces- 
sible. The rapidity and small cost of carriage, tend to special- 



THE MULTIPLICATION OF EFFECTS. 455 

ize more than ever the industries of different districts — to 
confine each manufacture to the parts in which, from local 
advantages, it can be best carried on. Economical distribu- 
I tion equalizes prices, and also, on the average, lowers prices : 
| thus bringing divers articles within the means of those before 
: unable to buy them, and so increasing their comforts and 
I improving their habits. At the same time the practice of 
travelling is immensely extended. Classes who before could 
I not afford it, take annual trips to the sea ; visit their distant 
relations ; make tours ; and so we are benefited in body, 
j feeling3, and intellect. The more prompt transmission of 
letters and of news produces further changes — makes the 
pulse of the nation faster. Yet more, there arises a wide 
dissemination of cheap literature through railway book- stalls, 
and of advertisements in railway carriages : both of them 
aiding ulterior progress. And the innumerable changes here 
briefly indicated are consequent on the invention of the loco- 
motive engine. The social organism has been rendered more 
heterogeneous, in virtue of the many new occupations intro- 
duced, and the many old ones further specialized ; prices in 
all places have been altered ; each trader has, more or less, 
modified his way of doing business ; and every person has 
been affected in his actions, thoughts, emotions. 

The only further fact demanding notice, is, that we here 
see more clearly than ever, that in proportion as the area over 
which any influence extends, becomes heterogeneous, the 
results are in a yet higher degree multiplied in number and 
kind. While among the primitive tribes to whom it was 
first known, caoutchouc caused but few changes, among our- 
selves the changes have been so many and varied that the 
history of them occupies a volume. Upon the small, homo- 
geneous community inhabiting one of the Ilebrides, the 
electric telegraph would produce, were it used, scarcely any 
results ; but in England the results it produces are multitu- 
dinous. 

Space permitting, the synthesis might here be pursued 



456 



THE MULTIPLICATION OF EFFECTS. 



in relation to all the subtler products of social life. It might 
be shown how, in Science, an advance of one division pre- 
sently advances other divisions — how Astronomy has been 
immensely forwarded by discoveries in Optics, while other 
optical discoveries have initiated Microscopic" Anatomy, and 
greatly aided the growth of Physiology — how Chemistry has 
indirectly increased our knowledge of Electricity, Magnetism, 
Biology, Geology — how Electricity has reacted on Chemistry 
and Magnetism, developed our views of Light and Heat, and 
disclosed sundry laws of nervous action. In Literature the 
same truth might be exhibited in the still-multiplying forms 
of periodical publications that have descended from the first 
newspaper, and which have severally acted and reacted on 
other forms of literature and on each other ; or in the bias 
given by each book of power to various subsequent books. 
The influence which a new school of Painting (as that of the 
pre-Baffa elites) exercises on other schools ; the hints which 
all kinds of pictorial art are deriving from Photography ; the 
complex results of new critical doctrines ; might severally be 
dwelt on as displaying the like multiplication of effects. But 
it would needlessly tax the reader's patience to detail, in 
their many ramifications, these various changes : here be- 
come so involved and subtle as to be followed with some 
difficulty. 

§ 162. After the argument which closed the last chapter, a 
parallel one seems here scarcely required. For symmetry's 
sake, however, it will be proper briefly to point out how the 
multiplication of effects, like the instability of the homo- 
geneous, is a corollary from the persistence of force. 

Things which we call different are things which react in 
iiffcrent ways ; and we can know them as different only by 
the differences in their reactions. When we distinguish 
bodies as hard and soft, rough and smooth, we simply mean 
that certain like muscular forces expended on them are 
followed by unlike sets of sensations— unlike reactive forces. 



THE MULTIPLICATION OF EFFECTS. 457 

Objects that are classed as red, blue, j-ellow, &c, are objects 
that decompose light in strongly- contrasted ways ; that is, we 
know contrasts of colour as contrasts in the changes produced 
in a uniform incident force. Manifestly, any two things 
which do not work unequal effects on consciousness, either by 
unequally opposing our own energies, or by impressing oui 
6enses with unequally modified forms of certain external 
energies, cannot be distinguished by us. Hence the proposi 
tion that the different parts of any whole must react differ- 
ently on a uniform incident force, and must so reduce it to 
a group of multiform forces, is in essence a truism. A 
further step will reduce this truism to its lowest terms. 

"When, from unlikeness between the effects they produce 
on consciousness, we predicate unlikeness between two ob- 
jects, what is our warrant? and what do we mean by the 
unlikeness, objectively considered ? Our warrant is the per- 
sistence of force. Some kind or amount of change has been 
wrought in us by the one, which has not been wrought by 
the other. This change we ascribe to some force exercised by 
the one which the other has not exercised. And we have no 
alternative but to do this, or to assert that the change had 
no antecedent ; which is to deny the persistence of force. 
Whence it is further manifest that what we regard as the 
objective unlikeness is the presence in the one of some force, 
or set of forces, not present in the other — something in the 
kinds or amounts or directions of the constituent forces of the 
one, which those of the other do not parallel. But now if 
things or parts of things which we call different, are those of 
which the constituent forces differ in one or more respects ; 
what must happen to any like forces, or any uniform force, 
railing on them ? Such like forces, or parts of a uniform 
force, must be differently modified. The force which is pre- 
sent in the one and not in the other, must be an element in 
the conflict — must produce its equivalent reaction ; and must 
so affect the total reaction. To say otherwise is to say that 
21 



458 THE MULTIPLICATION OF EFFECTS 

this differential force will produce no effect ; which is to say 
that force is not persistent. 

I need not develop this corollary further. It manifestly 
follows that a uniform force, falling on a uniform aggre- 
gate, must undergo dispersion ; that falling on an aggregate 
made up of unlike parts, it must undergo dispersion from 
each part, as well as qualitative differentiations; that in pro- 
portion as the parts are unlike, these qualitative differentia- 
tions must be marked ; that in proportion to the number of 
the parts, they must be numerous ; that the secondary foroes 
so produced, must undergo further transformations while 
working equivalent transformations in the parts that change 
them ; and similarly with the forces they generate. Thus the 
conclusions that a part- cause of Evolution is the multiplica- 
tion of effects ; and that this increases in geometrical progres- 
sion as the heterogeneity becomes greater ; are not only to be 
established inductively, but are deducible from the deepest 
of all truths 



CHAPTER XXL 

SEGREGATION. 

§ 1G3, The general interpretation of Evolution is far from 
being completed in the preceding chapters. We must con- 
template its changes under yet another aspect, before we can 
form a definite conception of the process constituted by them. 
Though the laws already set forth, furnish a key to the re- 
arrangement of parts which Evolution exhibits, in so far as 
it is an advance from the uniform to the multiform ; they 
furnish no key to this re- arrangement in so far as it is an 
advance from the indefinite to the definite. On studying the 
actions and re- actions everywhere goin^ on, we have found 
it to follow inevitabl} 7 from a certain primordial truth, that 
the homogeneous must lapse into the heterogeneous, and that 
the heterogeneous must become more heterogeneous ; but we 
have not discovered why the differently- affected parts of any 
simple whole, become clearly marked off from each other, at 
the same time that they become unlike. Thus far no reason 
has been assigned why there should not ordinarily arise a 
vague chaotic heterogeneity, in place of that orderly hetero- 
geneity displayed in Evolution. It still remains to find out 
the cause of that local integration which accompanies 
local differentiation — that gradually-completed segregation 
of like units into a group, distinctly separated from neigh- 
bouring groups which are severally made up of other kinds 
of units. The rationale will be conveniently introduced by a 



1G0 SEGREGATION. 

few instances in which, we may watch this segregative pro- 
cess taking place. 

When towards the end of September, the trees are gaining 
their autumn colours, and we are hoping shortly to see a 
further change increasing still more the beauty of the land- 
scape, we are not uncommonly disappointed by the occur- 
rence of an equinoxial gale. Out of the mixed mass of 
foliage on each branch, the strong current of air carries 
away the decaying and brightly -tinted leaves, but fails to 
detach those which are still green. And while these last, 
frayed and seared by long-continued beatings against each 
other, and the twigs around them, give a sombre colour to 
the woods, the red and yellow and orange leaves are collected 
together in ditches and behind walls and in corners where 
eddies allow them to settle. That is to say, by the action of 
that uniform force which the wind exerts on both kinds, the 
dying leaves are picked out from among their still living com- 
panions and gathered in places by themselves. Again, the 
separation of particles of different sizes, as dust and sand 
from pebbles, may be similarly effected ; as we see on every 
road in March. And from the da} T s of Homer downwards, 
the power of currents of air, natural and artificial, to part 
from one another units of unlike specific gravities, has 
been habitually utilized in the winnowing of chaff from 
wheat. In every river we see how the mixed ma- 

terials carried down, are separately deposited — how in rapids 
the bottom gives rest to nothing but boulders and pebbles ; 
how where the current is not so strong, sand is let fall ; and 
how, in still places, there is a sediment of mud. This select- 
ive action of moving water, is commonly applied in the arts 
to obtain masses of particles of different degrees of fineness. 
Emery, for example, after being ground, is carried by a slow 
current through successive compartments ; in the first of 
which the largest grains subside ; in the second of which 
the grains that reach the bottom before the water has 
escaped, are somewhat .smaller ; in the third smaller still ; 



• SEGREGATION. 461 

until in the last there are deposited only those finest 
particles which fall so slowly through the water, that they 
have not previously been able to reach the bottom. And in 
a way that is different though equally significant, this segre- 
gative effect of water in motion, is exemplified in the carry- 
ing away of soluble from insoluble matters — an application 
of it hourly made in every laboratory. The effects oi 

the uniform forces which aerial and aqueous currents exercise, 
are paralleled by those of uniform forces of other orders. Elec- 
t ric attraction will separate small bodies from large, or light 
bodies from heavy. By magnetism, grains of iron may be 
selected from among other grains ; as by the Sheifield 
grinder, whose magnetized gauze mask filters out the steel- 
dust which his wheel gives off, from the stone-dust that 
accompanies it. And how the affinity of any agent acting 
differently on the components of a given body, enables us to 
take away some component and leave the rest behind, is 
shown in almost every chemical experiment. 

What now is the general truth here variously presented ? 
How are these several facts and countless similar ones, to be 
expressed in terms that embrace them all ? In each case we 
see in action a force which may be regarded as simple or uni- 
form — fluid motion in a certain direction at a certain velocity ; 
electric or magnetic attraction of a given amount \ chemical 
affinity of a particular kind : or rather, in strictness, the act- 
ing force is compounded of one of these and certain other 
uniform forces, as gravitation, etc. In each case we have an 
aggregate made up of unlike units — either atoms of different 
substances combined or intimately mingled, or fragments of 
the same substance of different sizes, or other constituent 
parts that arc unlike in their specific gravities, shapes, or 
other attributes. And in each case these unlike units, or 
groups of units, of which the aggregate consists, arc, under 
the influence of some resultant force acting indiscrimi- 
nately on them all, separated from each other— "-segregated 
into minor aggregates, each consisting of units that are 



462 SEGEEGATION. 

severally like each other and unlike those of the other minor 
aggregates. Such being the common aspect of these changes, 
let us look for the common interpretation of them. 

In the chapter on " The Instability of the Homogeneous," 
it was shown that a uniform force falling on any aggregate, 
produces unlike modifications in its different parts — turns the 
uniform into the multiform and the multiform into the more 
multiform. The transformation thus wrought, consists of 
either insensible or sensible changes of relative position 
among the units, or of both — either of those molecular re- 
arrangements which we call chemical, or of those larger 
transpositions which are distinguished as mechanical, or of 
the two united. Such portion of the permanently effective 
force as reaches each different part, or differently- conditioned 
part, may be expended in modifying the mutual relations of 
its constituents ; or it may be expended in moving the part 
to another place ; or it may be expended partially in the first 
and partially in the second. Hence, so much of the perma- 
nently effective force as does not work the one kind of effect, 
must work the other kind. It is manifest that if of the 
permanently effective force which falls on some compound 
unit of an aggregate, little, if any, is absorbed in re- arrang- 
ing the ultimate components of such compound unit, much 
or the whole, must show itself in motion of such compound 
unit to some other place in the aggregate ; and conversely, 
if little or none of this force is absorbed in generating me- 
chanical transposition, much or the whole must go to pro- 
duce molecular alterations. What now must follow 
from this ? In cases where none or only part of the fore 3 
generates chemical re- distributions, what physical re-distri- 
butions must be generated ? Parts that are similar to each 
other will be similarly acted on by the force ; and will simi- 
larly react on it. Parts that are dissimilar will be dissimi- 
larly acted on by the force ; and will dissimilarly react on 
it. Hence the permanently effective incident force, when 
wholly or partially transformed intc mechanical motion 



SEGREGATION. 4G3 

of the units, will produce like motions in units that are 
alike, and unlike motions in units that are unlike. If 
then, in an aggregate containing two or more orders of mixed 
units, those of the same order will be moved in the same way, 
and in a way that differs from that in which units of other 
orders are moved, the respective orders must segregate. A 
group of like things on which are impressed motions that are 
alike in amount and direction, must be transferred as a group 
to another place, and if they are mingled with some group of 
other things, on which the motions impressed are like each 
other, but unlike those of the first group in amount or di- 
rection or both, these other things must be transferred as a 
group to some other place — the mixed units must undergo a 
simultaneous selection and separation. 

In further elucidation of this process, it will be well hero 
to set down a few instances in which we may sec that, other 
things equal, the definiteness of the separation is in propor- 
tion to the definiteness of the difference between the units. 
Take a handful of any pounded substance, containing frag- 
ments of all sizes ; and let it fall to the ground while a 
gentle breeze is blowing. The large fragments will be 
collected together on the ground almost immediately under 
the hand ; somewhat smaller fragments will be carried a 
little to the leeward ; still smaller ones a little further ; and 
those minute particles which we call dust, will be drifted a 
long way before they reach the earth : that is, the integration 
is indefinite where the difference among the fragments is 
indefinite, though the divergence is greatest where the 
difference is greatest. If, again, the handful be made up of 
quite distinct orders of units — as pebbles, coarse sand, and 
dust — these will, under like conditions, be segregated with 
comparative definiteness : the pebbles will drop almost verti- 
cally; the sand will fall in an inclined direction, and deposit 
itself within a tolerably circumscribed space beyond the 
pebbles ; while the dust will be blown almost horizontally to 
a great distance. A case in which another kind of force 



464 SEGREGATION. 

comes into play, will still better illustrate this truth. 
Through a mixed aggregate of soluble and insoluble sub- 
stances, let water slowly percolate. There will in the first 
place be a distinct parting of the substances that are the most 
widely contrasted in their relations to the acting forces : the 
soluble will be carried away ; the insoluble will remain be- 
hind. Further, some separation, though a less definite one, 
will be effected among the soluble substances ; since the first 
part of the current will remove the most soluble substances in 
the largest amounts, and after these have been all dissolved, 
the current will still continue to bring out the remaining less 
soluble substances. Even the undissolved matters will have 
simultaneously undergone a certain segregation ; for the 
percolating fluid will carry down the minute fragments from 
among the large ones, and will deposit those of small specific 
gravity in one place, and those of great specific gravity in 
another. To complete the elucidation we must glance 

at the obverse fact ; namely, that mixed units which differ but 
slightly, are moved in but slightly-different ways by incident 
forces, and can therefore be separated only by such adjust- 
ments of the incident forces as allow slight differences to be- 
come appreciable factors in the result. This truth is made 
manifest by antithesis in the instances just given ; but it may 
be made much more manifest by a few such instances as 
those which chemical analysis supplies in abundance. The 
parting of alcohol from water by distillation is a good one. 
Here we have atoms consisting of oxygen and hydrogen, 
mingled with atoms consisting of oxygen, hydrogen, and 
carbon. The two orders of atoms have a considerable 
similarity of nature : they similarly maintain a fluid form at 
ordinary temperatures ; they similarly become gaseous more 
and more rapidly as the temperature is raised ; and they boil 
at points not very far apart. Now this comparative likeness 
of the atoms is accompanied by difficulty in segregating 
them. If the mixed fluid is unduly heated, much water dis- 
tils over with the alcohol : it is only within a narrow range 



SEGREGATION. 4G5 

of tem]>eraturc, that the one set of atoms are driven off rather 
than the others ; and even then not a few of the others ac- 
company them. The most interesting and instructive 
example, however, is furnished by certain phenomena of 
crystallization. When several salts that have little analogy 
>f constitution, are dissolved in the same body of water, they 
are separated without much trouble, by crystallization : their 
respective units moved towards each other, as physicists sup- 
pose, by polar forces, segregate into crystals of their respect- 
ive kinds. The crystals of each salt do, indeed, usually con- 
tain certain small amounts of the other salts present in the 
solution — especially when the crystallization has been rapid ; 
but from these other salts they are severally freed by repeated 
re-solutions and crystallizations. Mark now, however, that the 
reverse is the case when the salts contained in the same body 
of water are chemically homologous. The nitrates of baryta 
and lead, or the sulphates of zinc, soda, and magnesia, unite 
in the same crystals ; nor will they crystallize separately if 
these crystals be dissolved afresh, and afresh crystallized, 
even with great care. On seeking the cause of this anomaly, 
chemists found that such salts were isomorphous — that their 
atoms, though not chemically identical, were identical in the 
proportions of acid, base, and water, composing them, and in 
1 their crystalline forms : whence it was inferred that their 
atoms are nearly alike in structure. Thus is clearly illustrated 
j (he truth, that units of unlike kinds are selected out and 
' separated with a readiness proportionate to the degree of 
, their unlikeness. In the first case we see that being dis- 
similar in their forms, but similar in so far as they are 
soluble in water of a certain temperature, the atoms segrc- 
I gate, though imperfectly. In the second case we see that the 
J atoms, having not only the likeness implied by solubility in 
the same menstruum, but also a great likeness of structure, 
' do not segregate — are sorted and parted from each other only 
' under quite special conditions, and then very incompletely. 
That is, the incident force of mutual polarity impresses unlihe 



iOQ SEGREGATION. 

motions on the mixed units in proportion as they are unlike ; 
and therefore, in proportion as they are unlike, tends to de- 
posit them in separate places. 

There is a converse cause of segregation, which it is need- 
less here to treat of with equal fulness. If different units 
acted on by the same force, must be differently moved ; so, 
too, must units of the same kind be differently moved by 
jlifferent forces. Supposing some group of units forming part 
of a homogeneous aggregate, are unitedly exposed to a force 
that is unlike in amount or direction to the force acting on 
the rest of the aggregate ; then this group of units will 
separate from the rest, provided that, of the force so acting 
on it, there remains any portion not dissipated in molecular 
vibrations, nor absorbed in producing molecular re- arrange- 
ments. After all that has been said above, this proposition 
needs no defence. 

Before ending our preliminary exposition, a comple- 
mentary truth must be specified ; namely, that mixed forces 
are segregated by the reaction of uniform matters, just as 
mixed matters are segregated by the action of uniform 
forces. Of this truth a complete and sufficient illustration 
is furnished by the dispersion of refracted light. A beam 
of light, made up of ethereal undulations of different orders, 
is not uniformly deflected by a homogeneous refracting 
body ; but the different orders of undulations it contains, are 
deflected at different angles : the result being that these 
different orders of undulations are separated and integrated, 
and so produce what we know as the colours of the spectrum. 
A segregation of another kind occurs when rays of light 
traverse an obstructing medium. Those rays which consist 
of comparatively short undulations, are absorbed before those 
which consist of comparatively long ones ; and the red rays, 
which consist of the longest undulations, alone penetrate 
when the obstruction is very great. How, conversely, there 
is produced a separation of like forces by the reaction of un- 
like matteiu, is also made manifest by the phenomena of 



SEGREGATION. 4G7 

refraction : since adjacent and parallel beams of light, fall- 
ing on, and passing through, unlike substances, are made to 
diverge. 

§ 164. On the assumption of their nebular origin, stars and 
planets exemplify that cause of material segregation last 
assigned — the action of unlike forces on like units. 

In a preceding chapter (§ 150) we saw that if matter 
ever existed in a diffused form, it could not continue uni- 
formly distributed, but must break up into masses. It was 
shown that in the absence of a perfect balance of mutual at- 
tractions among atoms dispersed through unlimited space, 
there must arise breaches of continuity throughout the ag- 
gregate formed by them, and a concentration of it towards 
centres of dominant attraction. Where any such breach of 
continuity occurs, and the atoms that were before adjacent 
separate from each other; they do so in consequence of a 
difference in the forces to which they are respectively sub- 
ject. The atoms on the one side of the breach are exposed 
to a certain surplus attraction in the direction in which they 
begin to move ; and those on the other to a surplus attrac- 
tion in the opposite direction. That is, the adjacent groups 
of like units are exposed "to unlike resultant forces ; and ac- 
cordingly separate and integrate. 

The formation and detachment of a nebulous ring, illus- 
trates the same general principle. To conclude, as Laplace 
did, that the equatorial portion of a rotating nebulous 
spheroid, will, during concentration, acquire a centrifugal 
force sufficient to prevent it from following the rest of the 
contracting mass, is to conclude that such portions will 
remain behind as are in common subject to a certain differ- 
ential force. The line of division between the ring and 
the spheroid, must be a line inside of which the aggregative 
force is greater than the force resisting aggregation ; and 
outside of which the force resisting aggregation is greater 
than the aggregative force. Hence the alleged process 



4G8 SEGREGATION. 

conforms fco the law that among like units, exposed to unlike 
forces, the similarly conditioned part from the dissimilarly 
conditioned. 

§ 1G5. Those geologic changes usually classed as aqueous, 
display under numerous forms the segregation of unlike 
units by a uniform incident force. On sea-shores, the waves 
are ever sorting-out and separating the mixed materials 
against which they break. From each mass of fallen cliff, 
the rising and ebbing tide carries away all those particles 
which are so small as to remain long suspended in the 
water ; and, at some distance from shore, deposits them in 
the shape of line sediment. Large particles, sinking with 
comparative rapidity, are accumulated into beds of sand 
•near low water-mark. The coarse grit and small pebbles 
collect together on the incline up which the breakers rush. 
And on the top lie the larger stones and boulders. Still 
more specific segregations may occasionally be observed. 
Flat pebbles, produced by the breaking down of laminated 
rock, are sometimes separately collected in one part of a 
shingle bank. On this shore thp deposit is wholly of mud ; 
on that it is wholly of sand. Here we find a sheltered cove 
filled with small pebbles almost of one size ; and there, in a 
curved bay one end of which is more exposed than the other, 
we see a progressive increase in the massiveness of the stones 
as we walk from the less exposed to the more exposed end. 
Trace the history of each geologic deposit, and we are 
quickly led down to the fact, that mixed fragments of 
matter, differing in their sizes or weights, are, when ex- 
posed to the momentum and friction of water, joined 
with the attraction of the Earth, selected from each 
other, and united into groups of comparatively like 
fragments. And we see that, other things equal, the sepa- 
ration is definite in proportion as the differences of the units 
are marked. After they have been formed, sedi- 

mentary strata exhibit segregations of another kind. The 



SEGREGATION. 469 

(lints and tlio nodules of iron pyrites that are found in chalk, 
as well as the silicious concretions winch occasionally occur 
in limestone, can be interpreted only as aggregations of 
atoms of silex or sulphuret of iron, originally diffused almost 
uniformly through the deposit, but gradually collected round 
certaincentrcs, notwithstanding the solid or semi-solid state of 
the surrounding matter. What is called bog iron-ore supplies 
the conditions and the result in still more obvious correlation. 
Among igneous changes we do not find so many examples 
of the process described. When distinguishing simple and 
compound evolution, it was pointed out (§ 102) that an ex- 
cessive quantity of contained molecular motion, prevents per- 
manence in those secondary re-distributions which make evo- 
lution compound. Nevertheless, geological phenomena of 
this order are not barren of illustrations. Where the mixed 
matters composing the Earth's crust have been raised to a 
very high temperature, segregation habitually takes place 
as the temperature diminishes. Sundry of the substances 
that escape in a gaseous form from volcanoes, sublime into 
crystals on coming against cool surfaces; and solidifying aa 
these substances do, at different temperatures, they are de- 
posited at different parts of the crevices through which they 
are. emitted together. The best illustration, however, is 
furnished by the changes that occur during the slow cooling 
of igneous rock. When, through one of the fractures from 
time to time made in the solid shell which forms the Earth's 
crust, a portion of the molten nucleus is extruded ; and when 
this is cooled with comparative rapidity, through free radia- 
tion and contact with cold masses; it forms a substance 
known as trap or basalt — a substance that is uniform in 
texture, though made up of various ingredients. But when, 
not escaping through the superficial strata, such a portion of 
the molten nucleus is slowly cooled, it becomes what we 
know as granite : the mingled particles of quartz, feldspar, 
and mica, being kept for a long time in a fluid and semi- 
tluid state — a state of comparative mobility — undergo thoso 



470 SEGREGATION. 

changes of position which the forces impressed on them by 
their fellow units necessitate. Having time in which tc 
generate the requisite motions of the atoms, the differential 
forces arising from mutual polarity, segregate the quartz, 
feldspar, and mica, into crystals. How completely this is de- 
pendent on the long-continued agitation of the mixed par- 
ticles, and consequent long- continued mobility by small dif- 
ferential forces, is proved by the fact that in granite dykes, 
the crystals in the centre of the mass, where the fluidity or 
semi-fluidity continued for a longer time, are much larger 
than those at the sides, where contact with the neighbour- 
ing rock caused more rapid cooling and solidification. 

§ 1G6. The actions going on throughout an organism are so 
involved and subtle, that we cannot expect to identify the par- 
ticular forces by which particular segregations are effected. 
Among the few instances admitting of tolerably definite in- 
terpretation, the best are those in which mechanical pressures 
and tensions are the agencies at work. We shall discover 
several on studying the bony frame of the higher animals. 

The vertebral column of a man, is subject, as a whole, to 
certain general strains — the weight of the body, together 
with the reactions involved by all considerable muscular 
efforts; and in conformity with this, it has become segregated 
as a whole. At the same time, being exposed to different 
forces in the course of those lateral bendings which the 
movements necessitate, its parts retain a certain separateness. 
And if we trace up the development of the vertebral column 
from its primitive form of a cartilaginous cord in the lowest 
fishes, we see that, throughout, it maintains an integration 
corresponding to the unity of the incident forces, joined with 
a division into segments corresponding to the variety of 
the incident forces. Each segment, considered apart, 

exemplifies the truth more simply. A vertebra is not a single 
bone, but consists of a central mass with sundry append- 
ages or processes; and in rudimentary types of vertebra?, 



6EGEEGATI0N. 471 

theee appendages are quite separate from the central raasw, 
and, indeed, exist before it makes its appearance. But these 
several independent bones, constituting a primitive spinal 
segment, are subject to a certain aggregate of forces 
which agree more than they differ : as the fulcrum to 
a group of muscles habitually acting together, they per- 
petually undergo certain reactions in common. And ac- 
cordingly, we see that in the course of development they 
gradually coalesce. Still clearer is the illustration 

furnished by spinal segments that become fused together 
where they are together exposed to some predominant strain. 
The sacrum consists of a group of vertebrae firmly united. 
In the ostrich and its congeners there are from seventeen to 
twenty sacral vertebrae ; and besides being confluent with each 
other, these are confluent with the iliac bones, which run on 
each side of them. If now we assume these vertebrae to have 
been originally separate, as they still are in the embryo bird ; 
and if we consider the mechanical conditions to which they 
must in such case have been exposed ; we shall see that their 
union results in the alleged way. For through these vertebrae 
the entire weight of the body is transferred to the legs : the 
legs support the pelvic arch ; the pelvic arch supports the 
sacrum ; and to the sacrum is articulated the rest of the 
spine, with all the limbs and organs attached to it. Hence, 
if separate, the sacral vertebrae must be held firmly together 
by strongly-contracted muscles ; and must, by implication, be 
prevented from partaking in those lateral movements which 
the other vertebrae undergo — they must be subject to a com- 

, mon strain, while they are preserved from strains which 
would affect them differently ; and so they fulfil the condi- 

| tions under which segregation occurs. But the cases 

' in which cause and effect are brought into the most obvious 
relation, are supplied by the limbs. The metacarpal bones 
(those which in man support the palm of the hand) arc separ- 

' ate from each other in the majority of mammalia : the separ- 
ate actions of the toes entailing on them slight amounts of 



472 SEGREGATION. 

separate movements. This is not so however in the ox-tribe 
and the horse-tribe. In the ox-tribe, only the middle meta- 
carpals (third and fourth) are developed ; and these, attain- 
ing massive proportions, coalesce to form the cannon bone. 
In the horse-tribe, the segregation is what we may distin- 
guish as indirect : the second and fourth metacarpals are 
present only as rudiments united to the sides of the third, 
while the third is immensely developed ; thus forming a 
cannon bone which differs from that of the ox in being a 
single cylinder, instead of two cylinders fused together. 
The metatarsus in these quadrupeds exhibits parallel 
changes. Now each of these metamorphoses occurs where 
the different bones grouped together have no longer any 
different functions, but retain only a common function. The 
feet of oxen and horses are used solely for locomotion — are 
not put like those of unguiculate mammals to purposes 
which involve some relative movements of the metacarpals. 
Thus there directly or indirectly results a single mass of bone 
where the incident force is single. And for the inference 
that these facts have a causal connexion, we find confirma- 
tion throughout the entire class of birds ; in the wings 
and legs of which, like segregations are found under like 
conditions. While this sheet is passing through the 

press, a fact illustrating this general truth in a yet more 
remarkable manner, has been mentioned to me by Prof. 
Huxley ; who kindly allows me to make use of it while still 
unpublished by him. The Glyptodon, an extinct mammal 
found fossilized in South America, has long been known as a 
large uncouth creature allied to the Armadillo, but having a 
massive dermal armour consisting of polygonal plates closely 
fitted together so as to make a vast box, inclosing the body 
in such way as effectually to prevent it from being bent, 
laterally or vertically, in the slightest degree. This bony 
box, which must have weighed several hundred- weight, was 
supported on the spinous processes of the vertebrce, and on 
the adjacent bones of ihe pelvic and thoracic arches. And 



SEGREGATION. 473 

the significant fact now to be noted, is, that here, where the 
trunk vertebrse were together exposed to the pressure of this 
heavy dermal armour, at the same time that, by its rigidity, 
they were preserved from all relative movements, the entire 
series of them were united into one solid, continuous bone. 

The formation and maintenance of a species, considered 
as an assemblage of similar organisms, is interpretable in 
an analogous way. "We have already seen that in so far as 
the members of a species are subject to different sets of inci- 
dent forces, they are differentiated, or divided into varieties. 
And here it remains to add that in so far as the} 7 " are subject 
to like sets of incident forces, they are segregated, or reduced 
to, and kept in, the state of a uniform aggregate. For by the 
process of " natural selection, " there is a continual purifica- 
tion of each species from those individuals which depart 
from the common type in ways that unfit them for the con- 
ditions of their existence. Consequently, there is a continual 
leaving behind of those individuals which are in all respects 
fit for the conditions of their existence ; and are therefore 
very nearly alike. The circumstances to which any species 
is exposed, being, as we before saw, an involved combination 
iof incident forces ; and the members of the species having 
mixed with them some that differ more than usual from the 
average structure required for meeting these forces ; it re- 
sults that these forces are constantly separating such diver- 
gent individuals from the rest, and so preserving the uni- 
formity of the rest — keeping up its integrity as a species. 
Just as the changing autumn leaves are picked out by the 
wind from among the green ones around them, or just as, 
'to use Prof. Huxley's simile, the smaller fragments pass 
ih rough the sieve while the larger are kept back ; so, the 
uniform incidence of external forces affects the members of a 
i group of organisms similarly in proportion as they are similar, 
and differently in proportion as they are different ; and thus is 
ever segregating the like by parting the unlike from them. 
Whether these separated members arc killed off, as mostly 



474 SEGREGATION". 

happens, or whether, as otherwise happens, they survive and 
multiply into a distinct variety, in consequence of their 
fitness to certain partially unlike conditions, matters not to 
the argument. The one case conforms to the law, that the 
unlike units of an aggregate are sorted into their kinds and 
parted when uniformly subject to the same incident forces ; 
and the other to the converse law, that the like units of an 
aggregate are parted and separately grouped when subject to 
different incident forces. And on consulting Mr. Darwin's 
remarks on divergence of character, it will be seen that the 
segregations thus caused tend ever to become more definite. 

§ 167. Mental evolution under one of its leading aspects, 
we found to consist in the formation of groups of like ob- 
jects and like relations — a differentiation of the various 
things originally confounded together in one assemblage, 
and an integration of each separate order of things into a 
separate group (§ 153). Here it remains to point out that 
while unlikeness in the incident forces is the cause of such 
differentiations, likeness in the incident forces is the cause of 
such integrations. For what is the process through which 
classifications are established ? At first, in common with 
the uninitiated, the botanist recognizes only such conven- 
tional divisions as those which agriculture has established— 
distinguishes a few vegetables and cereals, and groups the 
rest together into the one miscellaneous aggregate of wild 
plants. How do these wild plants become grouped in his mind 
into orders, genera, and species ? Each plant he examines 
yields him a certain complex impression. Every now and 
then he picks up a plant like one before seen ; and the re- 
cognition of it is the production in him of a like connected 
group of sensations, by a like connected group of attributes. 
That is to say, there is produced throughout the nerves con- 
cerned, a combined set of changes, similar to a combined set 
of changes before produced. Considered analytically, each 
such combined set of changes is a combined set of molecular 






SEGREGATION. 475 

modifications wrought in the affected part of the organism. 
On every repetition of the impression, a like combined set of 
molecular modifications is superposed on the previous ones, 
and makes them greater : thus generating an internal idea 
corresponding to these similar external objects. Meanwhile, 
another kind of plant produces in the brain of the botanist 
another set of combined changes or molecular modifications 
— a set which does not agree with and deepen the one we 
have been considering, but disagrees with it ; and by repeti- 
tion of such there is generated a different idea answering to 
a different species. What now is the nature of this 

process expressed in general terms ? On the one hand there 
are the like and unlike things from which severally emanate 
the groups of forces by which we perceive them. On the 
other hand, there are the organs of sense and percipient 
centres, through which, in the course of observation, these 
groups of forces pass. In passing through these organs of 
sense and percipient centres, the like groups of forces are se- 
gregated, or separated from the unlike groups of forces ; and 
each such series of groups of forces, parted in this way from 
. others, answering to an external genus or species, constitutes 
i a state of consciousness which we call our idea of the genus 
■or species. "We before saw that as well as a separation of 
• mixed matters by the same force, there is a separation of 
' mixed forces by the same matter ; and here we may further 
; see that the unlike forces so separated, work unlike struct- 
ural changes in the aggregate that separates them — struct- 
! ural changes each of which thus represents, and is equivalent 
to, the integrated series of motions that has produced it. 

liy a parallel process, the connexions of co-existence and 
sequence among impressions, become sorted into kinds and 
grouped simultaneously with tho impressions themselves. 
/ When two phenomena that have been experienced in a 
given order, are repeated in the' same order, those nerves 
which before were affected by the transition are again af- 
fected ; and such molecular modification as they received 



£76 SEGREGATION. 

from the first motion propagated through them, is increased 
by this second motion along the same route. Each such mo- 
tion works a structural alteration, which, in conformity with 
the general law set forth in Chapter IX., involves a diminu- 
tion of the resistance to all such motions that afterwards 
occur. The segregation of these successive motions (or more 
strictly, the permanently effective portions of them expended 
in overcoming resistance) thus becomes the cause of, and the 
measure of, the mental connexion between the impressions 
which the phenomena produce. Meanwhile, phenomena that 
are recognized as different from these, being phenomena that 
therefore affect different nervous elements, will have their 
connexions severally represented by motions along othei 
routes ; and along each of these other routes, the nervous dis- 
charges will severally take place with a readiness proportion- 
ate to the frequency with which experience repeats the con- 
nexion of phenomena. The classification of relations must 
hence go on pari passu with the classification of the related 
things. In common with the mixed sensations received 
from the external world, the mixed relations it presents, 
cannot be impressed on the organism without more or less 
segregation of them resulting. And through this continu- 
ous sorting and grouping together of changes or motions, 
which constitutes nervous function, there is gradually 
wrought that sorting and grouping together of matter, 
which constitutes nervous structure. 

§ 128. In social evolution, the collecting together of the 
like and the separation of the unlike, by incident forces, is 
primarily displayed in the same manner as we saw it to be i 
among groups of inferior creatures. The human races tend 
to differentiate and integrate, as do races of -other living 
forms. Of the forces which effect and maintain the 

segregations of mankind, may first be named those external 
ones which we class as physical conditions. The climate and 
food that are favourable to an indigenous people, are more or 



SEGEEGATION. 477 

*ess detrimental to a people of different bodily constitution, 
coming from a remote part of the Earth. In tropical re- 
gions the northern races cannot permanently exist : if not 
killed off in the first generation, they are so in the second ; 
and, as in India, can maintain their footing only by the 
artificial process of continuous immigration and emigration. 
That is to say, the external forces acting equally on the in- 
habitants of a given locality, tend to expel all who are not 
of a certain type ; and so to keep up the integration of those 
who are of that type. Though elsewhere, as among Euro- 
ipean nations, we see a certain amount of permanent inter- 
mixture, otherwise brought about, we still see that this takes 
place between races of not very different types, that are 
naturalized to not very different conditions. The 

other forces conspiring to produce these national segrega- 
tions, are those mental ones which show themselves in the 
; affinities of men for others like themselves. Emigrants 
usually desire to get back among their own people ; and 
; where their desire does not take effect, it is only because the 
.restraining ties are too great. Units of one society who 
are obliged to reside in another, very generally form 
.colonies in the midst of that other — small societies of their 
own. Races which have been artificially severed, show 
strong tendencies to re-unite. Now though these segrega- 
tions that result from the mutual affinities of kindred men , 
do not seem interpretable as illustrations of the general 
principle above enunciated, they really are thus interpret* 
able. When treating of the direction of motion (§ 80), 
.it was shown that the actions performed by men for the 
satisfaction of their wants, were always motions along lines 
'of least resistance. The feelings characterizing a member 
of a given race, are feelings which get complete satisfaction 
,only among other members of that race — a satisfaction 
t partly derived from sympathy with those having like feel- 
ings, but mainly derived from the adapted social conditions 
which grow up where such feelings prevail. When, there- 



478 SEGREGATION. 

fore, a citizen of any nation is, as we see, attracted towards 
others of his nation, the rationale is, that certain agencies 
which we call desires, move him in the direction of least 
resistance. Human motions, like all other motions, being 
determined by the distribution of forces, it follows that 
such segregations of races as are not produced by incident 
external forces, are produced by forces which the units of 
the races exercise on each other. 

During the development of each society, we see analogous 
segregations caused in analogous ways. A few of them re- 
sult from minor natural affinities ; but those most important 
ones which constitute political and industrial organization, 
result from the union of men in whom similarities have been 
produced by education — using education in its widest sense, 
as comprehending all processes by which citizens are mould 
ed to special functions. Men brought up to bodily labour, 
are men who have had wrought in them a certain likeness — a 
likeness which, in respect of their powers of action, obscures 
and subordinates their natural differences. Those trained to 
brain-work, have acquired a certain other community of 
character which makes them, as social units, more like each 
other than like those trained to manual occupations. And 
there arise class-segregations answering to these super- 
induced likenesses. Much more definite segregations take 
place among the much more definitely assimilated members 
of any class who are brought up to the same calling. Even 
where the necessities of their work forbid concentration in one 
locality, as among artizans happens with masons and brick- 
layers, and among traders happens with the retail distribut- 
ors, and among professionals happens with the medical 
men ; there are not wanting Operative Builders Unions, and 
Grocers Societies, and Medical Associations, to show that 
these artificially-assimilated citizens become integrated as 
much as the conditions permit. And where, as among the 
manufacturing classes, the functions discharged do not re- 
quire the dispersion of the citizens thus artificially assimi- 



SEGREGATION. 479 

lated, there is a progressive aggregation of them in special 
localities ; and a consequent increase in the definiteness of 
i the industrial divisions. If now we seek the causes 

of these segregations, considered as results of force and mo- 
* tion, we find ourselves brought to the same general principle 
1 as before. This likeness generated in any class or sub- 
i class by training, is an aptitude acquired by its members 
for satisfying their wants in like ways. That is, the 
occupation to which each man has been brought up, has be- 
come to him, in common with those similarly brought up, a 
I line of least resistance. Hence under that pressure which 
determines all men to activity, these similarly- modified 
j social units are similarly affected, and tend to take similar 
courses. If then there be any locality which, either by its 
physical peculiarities or by peculiarities wrought on it 
during social evolution, is rendered a place where a certain 
( kind of industrial action meets with less resistance than else- 
where ; it follows from the law of direction of motion that 
those social units who have been moulded to this kind of 
: industrial action, will move towards this place, or become 
. ; integrated there. If, for instance, the proximity of coal and 
\ iron mines to a navigable river, gives to Glasgow a certain 
advantage in the building of iron shij^s — if the total labour 
required to produce the same vessel, and get its equivalent 
in food and clothing, is less there than elsewhere ; a con- 
| centration of iron-ship builders is produced at Glasgow : 
either by keeping there the population born to iron- ship 
building ; or by immigration of those elsewhere engaged in 
it ; or by both — a concentration that would be still more 
marked did not other districts offer counter-balancing facili- 
ties. The principle equally holds where the occupation is 
mercantile instead of manufacturing. Stock-brokers cluster 
- together in the city, because the amount of effort to be 
j severally gone through by them in discharging their func- 
tions, and obtaining their profits, is less there than in other 
localities. A place of exchange having once been estab- 
lished, becomes a place where the resistance to be overconv^ 



180 SEGREGATION. 

by each is less than elsewhere ; and the pursuit of the course 
of least resistance by each, involves their aggregation around 
this place. 

Of course, with units so complicated as those which consti- 
tute a society, and with forces so involved as those which 
move them, the resulting selections and separations must 
be far more entangled, or far less definite, than those we 
have hitherto considered. But though there may be pointed 
out many anomalies which at first sight seem inconsistent 
with the alleged law, a closer study shows that they are but 
subtler illustrations of it. For men's likenesses being of 
various kinds, lead to various orders of segregation. There 
are likenesses of disposition, likenesses of taste, likenesses 
produced by intellectual culture, likenesses that result from 
class-training, likenesses of political feeling; and it needs 
but to glance round at the caste-divisions, the associations 
for philanthropic, scientific, and artistic purposes, the reli- 
gious parties and social cliques ; to see that some species of 
likeness among the component members of each body 
determines their union. Now the different segregative pro- 
cesses by traversing one another, and often by their indirect 
antagonism, more or less obscure one another's effects ; and 
prevent any one differentiated class from completely inte- 
grating. Hence the anomalies referred to. But if this 
cause of incompleteness be duly borne in mind, social segre- 
gations will be seen to conform entirely to the same principle 
as all other segregations. Analysis will show that either by 
external incident forces, or by what we may in a sense 
regard as mutual polarity, there are ever being produced in 
society segregations of those units which have either a 
natural likeness or a likeness generated by training, 

§ 169. Can the general truth thus variously illustrated bo 
deduced from the persistence of force, in common with fore- 
going ones ? Probably the exposition at the beginning of 
the chapter will have led most readers to conclude that it 
can be so deduced. 



SEGREGATION. 481 

The abstract propositions involved are these : — First, that 
like units, subject to a uniform force capable of producing 
motion in them, will be moved to like degrees in the same 
direction. Second, that like units if exposed to unlike forces 
capable of producing motion in thcra, will be differently 
moved — moved either in different directions or to different 
degrees in the same direction. Third, that unlike units if 
acted on by a uniform force capable of producing motion in 
them, will be differently moved — moved either in different 
directions or to different degrees in the same direction. 
Fourth, that the incident forces themselves must be affected 
in analogous ways : like forces falling on like units must be 
similarly modified by the conflict ; unlike forces falling on 
like units must be dissimilarly modified ; and like forces fall- 
ing on unlike units must be dissimilarly modified. These 
propositions admit of reduction to a still more abstract form. 
They all of them amount to this : — that in the actions and 
reactions of force and matter, an unlikeness in either of 
the factors necessitates an unlikeness in the effects ; and that 
in the absence of unlikeness in either of the factors the 
effects must be alike. 

"When thus generalized, the immediate dependence of these 
propositions on the persistence of force, becomes obvious. 
Any two forces that are not alike, are forces which differ 
either in their amounts or directions or both ; and by what 
mathematicians call the resolution of forces, it may be proved 
that this difference is constituted by the presence in the one 
of some force not present in the other. Similarly, any two 
units or portions of matter which arc unlike in size, weight, 
form, or other attribute, can be known by us as unlike only 
through some unlikeness in the forces they impress on our 
conciousness ; and hence this unlikeness also, is constituted by 
the presence in the one of some force or forces not present in 
the other. Such being the common nature of these unlike- 
' nesses, what is the inevitable corollary ? Any unlikeness in 
the incident forces, where the things acted on are alike, must 
vererate a difference between the effects ; since otherwise, 



482 SEGREGATION. 

the differential force produces no effect, and force is not per- 
sistent. Any unlikeness in the things acted on, where the 
incident forces are alike, must generate a difference between 
the effects ; since otherwise, the differential force whereby 
these things are made unlike, produces no effect, and force is 
not persistent. While, conversely, if the forces acting and 
the things acted on, are alike, the effects must be alike ; 
since otherwise, a differential effect can be produced without 
a differential cause, and force is not persistent. 

Thus these general truths being necessary implications of 
the persistence of force, all the re-distributions above traced 
out as characterizing Evolution in its various phases, are also 
implications of the persistence of force. Such portions of 
the permanently effective forces acting on any aggregate, as 
produce sensible motions in its parts, cannot but work the 
segregations which we see take place. If of the mixed units 
making up such aggregate, those of the same kind have like 
motions impressed on them by a uniform force, while units of 
another kind are moved by this uniform force in ways more 
or less unlike the ways in which those of the first kind are 
moved, the two kinds must separate and integrate. If the 
units are alike and the forces unlike, a division of the differ- 
ently affected units is equally necessitated. Thus there in- 
evitably arises the demarcated grouping which we every- 
where see. By virtue of this segregation that grows ever more 
decided while there remains any possibility of increasing it, 
the change from uniformity to multiformity is accompanied 
by a change from indistinctness in the relations of parts to 
distinctness in the relations of parts. As we before saw that 
the transformation of the homogeneous into the heterogene- 
ous is inferable from that ultimate truth which transcends 
proof ; so we here see, that from this same truth is inferable 
the transformation of an indefinite homogeneity into a defi- 
nite heterogeneity. 



CHAPTER XXII. 

EQUILIBRATION. 

§ 170. And now towards what do these changes tendP 
| Will they go on for ever ? or will there be an end to them ? 
Can things increase in heterogeneity through all future time ? 
or must there be a degree which the differentiation and in- 
I tegration of Hatter and Motion cannot pass ? Is it possible 
! for this universal metamorphosis to proceed in the same gene- 
ral course indefinitely ? or does it work towards some ulti- 
mate state, admitting no further modification of like kind ? 
' The last of these alternative conclusions is that to which we 
are inevitably driven. "Whether we watch concrete processes, 
or whether we consider the question in the abstract, we are 
' alike taught that Evolution has an impassable limit. 

The re-distributions of matter that go on around us, are 

' ever being brought to conclusions by the dissipation of the 

< motions which effect them. The rolling stone parts with 

' portions of its momentum to the things it strikes, and finally 

comes to rest ; as do also, in like manner, the various things 

1 it has struck. Descending from the clouds and trickling 

\ over the Earth's surface till it gathers into brooks and rivers, 

1 water, still running towards a lower level, is at last arrested 

by the resistance of other water that has reached the lowest 

level. In the lake or sea thus formed, every agitation raised 

' by a wind or the immersion of a solid body, propagates itself 

around in waves that diminish as they widen, and gradually 



484 EQUILIBRATION. 

become lost to observation in motions communicated to the 
atmosphere and the matter on the shores. The impulse 
given by a player to the harp-string, is transformed through 
its vibrations into aerial pulses ; and these, spreading on all 
sides, and weakening as they spread, soon cease to be per- 
ceptible ; and finally die away in generating thermal undula- 
tions that radiate into space. Equally in the cinder that falls 
out of the fire, and in the vast masses of molten lava ejected 
by a volcano, we see that the molecular agitation known to 
us as heat, disperses itself by radiation ; t so that however 
great its amount, it inevitably sinks at last to the same degree 
as that existing in surrounding bodies. And if the actions 
observed be electrical or chemical, we still find that they work 
themselves out in producing sensible or insensible movements, 
that are dissipated as before ; until quiescence is eventually 
reached. The proximate rationale of the process 

exhibited under these several forms, lies in the fact 
dwelt on when treating of the Multiplication of Effects, that 
motions are ever being decomposed into divergent motions, 
and these into re-divergent motions.. The rolling stone 
sends off the stones it hits in directions differing more or less 
from its own ; and they do the like with the things they hit. 
Move water or air, and the movement is quickly resolved into 
radiating movements. The heat produced by pressure in a 
given direction, diffuses itself by undulations in all directions ; 
and so do the light and electricity similarly generated. 
That is to say, these motions undergo division and subdivi- 
sion ; and by continuance of this process without limit, they 
are, though never lost, gradually reduced to insensible mo- 
tions. 

In all cases then, there is a progress toward equilibration. 
That universal co- existence of antagonist forces which, as we 
before saw, necessitates the universality of rhythm, and j 
which, as we before saw, necessitates the decomposition of 
every force into divergent forces, at the same time necessi- 
tates the ultimate establishment of a balance. Every motion 



EQUILIBRATION. 485 

being motion under resistance, is continually suffering de- 
ductions ; and these unceasing deductions finally result in the 
cessation of the motion. 

The general truth thus illustrated under its simplest 
aspect, we must now look at under those more complex 
aspects it usually presents throughout Nature. In nearly all 
cases, the motion of an aggregate is compound ; and the equi- 
libration of each of its components, being carried on inde- 
pendently, does not affect the rest. The ship's bell that has 
ceased to vibrate, still continues those vertical and lateral 
oscillations caused by the ocean-swell. The water of the 
smooth stream on whose surface have died away the undu- 
lations caused by the rising fish, moves as fast as before 
onward to the sea. The arrested bullet travels with 
undiminished speed round the Earth's axis. And were the 
rotation of the Earth destroyed, there would not be implied 
any diminution of the Earth's movement with respect to the 
Sun and other external bodies. So that in every case, what 
we regard as equilibration is a disappearance of some one or 
more of the many movements which a body possesses, while 
its other movements continue as before. That this 

process may be duly realized and the state of things towards 
which it tends fully understood, it will be well here to cite a 
case in which we may watch this successive equilibration of 
combined movements more completely than we can do in 
those above instanced. Our end will best be served, not by 
the most imposing, but by the most familiar example. Let 
us take that of the spinning top. "When the string which 

: has been wrapped round a top's axis is violently drawn off, 
and the top falls on to the table, it usually happens that be- 

j sides the rapid rotation, two other movements are given to it. 

1 A slight horizontal momentum, unavoidably impressed on it 
when leaving the handle, carries it away bodily from the 

. place on which it drops ; and in con sequence of its axis being 
more or less inclined, it falls into a certain oscilla- 
tion, described by the expressive though inelegant word — 



436 EQUILIBRATION. 

" wabbling." These two subordinate motions, variable in 
their proportions to each other and to the chief motion, are 
commonly soon brought to a close by separate processes of 
equilibration. The momentum which carries the top bodily 
along the table, resisted somewhat by the air, but mainly by 
the irregularities of the surface, shortly disappears ; and the 
top thereafter continues to spin on one spot. Meanwhile, in 
consequence of that opposition which the axial momentum of 
a rotating body makes to any change in the plane of rotation, 
(so beautifully exhibited by the gyroscope,) the " wabbling" 
diminishes ; and like the other is quickly ended. These 
minor motions having been dissipated, the rotatory motion, 
interfered with only by atmospheric resistance and the fric- 
tion of the pivot, continues some time with such uniformity 
that the top appears stationary : there being thus temporarily 
established a condition which the French mathematicians 
have termed equilibrium mobile. It is true that when the 
axial velocity sinks below a certain point, new motions com- 
mence, and increase till the top falls ; but these are merely 
incidental to a case in which the centre of gravity is above 
the point of support. Were the top, having an axis of 
steel, to be suspended from a surface adequately magnetized, 
all the phenomena described would be displayed, and the 
moving equilibrium having been once arrived at, would con- 
tinue until the top became motionless, without any further 
change of position. Now the facts which it behoves 

us here to observe, are these. First, that the various motions 
which an aggregate possesses are separately equilibrated: 
those which are smallest, or which meet with the greatest 
resistance, or both, disappearing first ; and leaving at last, 
that which is greatest, or meets with least resistance, or both. 
Second, that when the aggregate has a movement of its parts 
with respect to each other, which encounters but little external 
resistance, there is apt to be established an equilibrium 
mobile. Third, that this moving equilibrium eventually 
lapses into complete equilibrium. 



EQUILIBRATION 487 

Fully to comprehend the process of equilibration, is not 
easy ; since we have simultaneously to contemplate various 
phases of it. The best course will be to glance separately at 
what we may conveniently regard as its four different 
orders. The first order includes the comparatively 

simple motions, as those of projectiles, which are not pro- 
longed enough to exhibit their rhythmical character ; but 
which, being quickly divided and subdivided into motions 
communicated to other portions of matter, are presently dis- 
sipated in the rhythm of ethereal undulations. In 
the second order, comprehending the various kinds of vi- 
bration or oscillation as usually witnessed, the motion is used 
up in generating a tension which, having become equal to it or 
momentarily equilibrated with it, thereupon produces a mo- 
tion in the opposite direction, that is subsequently equili- 
brated in like manner : thus causing a visible rhythm, that 
is, however, soon lost in invisible rhythms. The third 
order of equilibration, not hitherto noticed, obtains in those 
aggregates which continually receive as much motion as they 
expend. The steam engine (and especially that kind which 
feeds its own furnace and boiler) supplies an example. Here 
the force from moment to moment dissipated in overcoming 
the resistance of the machinery driven, is from moment to 
moment re-placed from the fuel ; and the balance of the 
two is maintained by a raising or lowering of the expenditure 
according to the variation of the supply : each increase or 
i decrease in the quantit}^ of steam, resulting in a rise or fall 
of the engine's movement, such as brings it to a balance with 
the increased or decreased resistance. This, which we may 
fitly call the dependent moving equilibrium, should be 
, specially noted ; since it is one that we shall commonly meet 
1 with throughout various phases of Evolution. The 
equilibration to be distinguished as of the fourth order, is the 
independent or perfect moving equilibrium. This we see 
illustrated in the rhythmical motions of the Solar System ; 
which, being resisted only by a medium of inappreciable 



488 



EQUILIBRATION. 



density, undergo no sensible diminution in such periods of 
time as we can measure. 

All these kinds of equilibration may, however, from the 
highest point of view, be regarded as different modes of one 
kind. For in every case the balance arrived at is relative, 
and not absolute — is a cessation of the motion of some par- 
ticular body in relation to a certain point or points, in- 
volving neither the disappearance of the relative motion lost, 
which is simply transformed into other motions, nor a dimi- 
nution of the body's motions with respect to other points. 
Thus understanding equilibration, it manifestly includes that 
equilibrium mobile, which at first sight seems of another 
nature. For any system of bodies exhibiting, like those of 
the Solar System, a combination of balanced rhythms, has 
this peculiarity £ — tjmt though the constituents of the S} T stem 
have relative movements, the system' as a whole has no 
movement. The centre of gravity of the entire group re- 
mains fixed. "Whatever quantity of motion any member 
of it has in any direction, is from moment to moment 
counter-balanced by an equivalent motion in some other 
part of the group in an opposite direction; and so the 
aggregate matter of the group is in a state of rest. "Whence 
it follows that the arrival at a state of moving equilibrium, 
is the disappearance of some movement which the ag- 
gregate had in relation to external things, and a con- 
tinuance of those movements only which the different parts 
of the aggregate have in relation to each other. Thus 
generalizing the process, it becomes clear that all forms of 
equilibration are intrinsically the same ; since in every 
aggregate, it is the centre of gravity only that loses it3 
motion : the constituents always retaining some motion with 
respect to each other — the motion of molecules if none else. 
Every equilibrium commonly regarded as absolute, is in one 
sense a moving equilibrium ; because along with a motion- 
less state of the whole there is always some relative move- 
ment of its insensible parts. And, conversely, every moving 



EQUILIBRATION. 48S* 

equilibrium may be in one sense regarded as absolute ; be- 
cause tlie relative movements of its sensible parts are accom- 
panied by a motionless state of the whole. 

Something has still to be added before closing these 
somewhat too elaborate preliminaries. The reader must 
naw especially note two leading truths brought out by the 
foregoing exposition : the one concerning the ultimate, or 
rather the penultimate, state of motion which the processes de- 
scribed tend to bring about ; the other concerning the concom- 
itant distribution of matter. This penultimate state 
of motion is the moving equilibrium ; which, as we have seen, 
tends to arise in an aggregate haviiig^omjiound motions, as a 
transitional state on the way tasfaH^jjofiplcte equilibrium. 
Throughout Evolution of all k^lfe, there is a cofftintial ap- 
proximation to, and more or le^sjcppwle4«maintei|fnce of, this 
moving equilibrium. As in the Solar System there ha^ been 
established an independent moving equilibrium— aff equili- 
brium such that the relative motions "o£-tlK*etWsHtuent parts 
are continually so counter-balanced by opposite motions, 
that the mean state of the whole aggregate never varies ; so 
is it, though in a less distinct manner, with each form of de- 
pendent moving equilibrium. The state of things exhibited 
in the cycles of terrestrial changes, in the balanced functions 
of organic bodies that have reached their adult forms, and in 
the acting and re-acting processes of fully- developed socie- 
ties, is similarly one characterized by compensating oscilla- 
tions. The involved combination of rhythms seen in each 
of these cases, has an average condition which remains prac- 
tically constant during the deviations ever taking place on 
opposite sides of it. And the fact which we have here par- 
ticularly to observe, is, that as a corollary from the general 
1 law of equilibration above set forth, the evolution of every 
aggregate must go on until this equilibrium mobile is estab 
lished; since, as we have seen, an excess of force which 
the aggregate possesses in any direction, must eventually 
bo expended in overcoming resistances to change in that 



490 EQUILIBRATION. 

direction : leaving behind only those movements which 
compensate each other, and so form a moving equili- 
brium. Respecting the structural state simultane- 
ously reached, it must obviously be one presenting an ar- 
rangement of forces that counterbalance all the forces to 
which the aggregate is subject. So long as there remains a 
residual force in any direction — be it excess of a force exer- 
cised by the aggregate on its environment, or • of a force 
exercised by its environment on the aggregate, equilibrium 
does not exist ; and therefore the re-distribution of matter 
must continue. Whence it follows that the limit of hptero- 
geneity towards which every aggregate progresses, is the 
formation of as many specializations and combinations of 
parts, as there are specialized and combined forces to be met. 

§ 171. Those successively changed forms which, if the 
nebular hypothesis be granted, must have arisen during 
;he evolution of the Solar System, were so many transitional 
Kinds of moving equilibrium ; severally giving place to more 
permanent kinds on the way towards complete equilibration. 
Thus the assumption of an oblate spheroidal figure by con- 
densing nebulous matter, was the assumption of a temporary 
and partial moving equilibrium among the component parts 
— a moving equilibrium that must have slowly grown 
more settled, as local conflicting movements were dis* 
sipated. In the formation and detachment of the 

nebulous rings, which, according to this hypothesis, from time 
to time took place, we have instances of progressive equili- 
bration ending in the establishment of a complete moving 
equilibrium. For the genesis of each such ring, implies a 
perfect balancing of that aggregative force which the 
whole spheroid exercises on its equatorial portion, by that 
centrifugal force which the equatorial portion has acquired 
during previous concentration : so long as these two forces 
are not equal, the equatorial portion follows the contracting 
mass * but as soon as the second force has increased up to an 



EQUILIBRATION. 491 

equality with the first, the equatorial portion can follow no 
further, and remains behind. While, however, the resulting 
ring, regarded as a whole connected by forces with external 
wholes, has reached a state of moving equilibrium ; its parts 
are not balanced with respect to each other. As we 
before saw (§ 150) the probabilities against the mainte- 
nance of an annular form by nebulous matter, are immense : 
from the instability of the homogeneous, it is inferrable that 
nebulous matter so distributed must break up into portions ; 
and eventually concentrate into a single mass. That is to 
say, the ring must progress towards a moving equilibrium 
of a more complete kind, during the dissipation of that 
motion which maintained its particles in a diffused form : 
leaving at length a planetary body, attended perhaps by a 
group of minor bodies, severally having residuary relative 
motions that are no longer resisted by sensible media ; and 
there is thus constituted an equilibrium mobile that is all but 
absolutely perfect.* 

Hypothesis aside, the principle of equilibration is still 
perpetually illustrated in those minor changes of state which 
the Solar System is undergoing. Each planet, satellite, 
and ccinet, exhibits to us at its aphelion a momentary equili- 

* Sir David Brewster has recently been citing with approval, a calculation 
by M. Babinet, to the effect that on the hypothesis of nebular genesis, the 
matter 6f the Sun, when it filled the Earth's orbit, must have taken 3181 years 
to rotate ; and that therefore the hypothesis cannot be true. This calculation of 
M. Babinet may pair-off with that of M. Comte, who, contrariwise, made the 
time of this rotation agree very nearly with the Earth's period of revolution 
round the Sun; for if M. Comte's calculation involved a pclitio principii, that of 
M. Babinet is manifestly based on two assumptions, both of which are gratuitous, 
and one of them totally inconsistent with the doctrine to be tested. He has evi- 
dently proceeded on the current supposition respecting the Sun's internal density, 
which is not proved, and from which there are reasons for dissenting ; and 
he has evidently taken for granted that all parts of the nebulous spheroid, when it 
filled the Earth's orbit, had the same angular velocity ; whereas if (as is implied 
hi the nebular hypothesis, rationally understood) this spheroid resulted from the 
I concentration of far more widely-diffused matter, the angular velocity of its 
equatorial portion irouid obviously be immensely greater than that of its central 
portion. 



J$2 EQUILIBKATIOiW 

briura between that force which urges it further away from 
its primary, and that force which retards its retreat ; since 
the retreat goes on until the last of these forces exactly 
counterpoises the first. In like manner at perihelion a con- 
verse equilibrium is momentarily established. The varia- 
tion of each orbit in size, in eccentricity, and in the position 
of its plane, has similarly a limit at which the forces pro- 
ducing change in the one direction, are equalled by those 
antagonizing it ; and an opposite limit at which an opposite 
arrest takes place. Meanwhile, each of these simple perturb- 
ations, as well as each of the complex ones resulting from 
their combination, exhibits, besides the temporary equilibra- 
tion at each of its extremes, a certain general equilibra- 
tion of compensating deviations on either side of a mean 
state. That the moving equilibrium thus constituted, 

tends, in the course of indefinite time, to lapse into a complete 
equilibrium, by the gradual decrease of planetary motions 
and eventual integration of all the separate masses com- 
posing the Solar System, is a belief suggested by certain 
observed cometary retardations, and entertained by some of 
high authority. The received opinion that the appreciable 
diminution in the period of Encke's comet, implies a loss of mo- 
mentum caused by resistance of the ethereal medium, commits 
astronomers who hold it, to the conclusion that this same re- 
sistance must cause a loss of planetary motions — a loss which, 
infinitesimal though it may be in such periods as we can 
measure, will, if indefinitely continued, bring these motions 
to a close. Even should there be, as Sir John Herschel sug- 
gests, a rotation of the ethereal medium in the same direction 
with the planets, this arrest, though immensely postponed, 
would not be absolutely prevented. Such an eventuality, 
however, must in any case be so inconceivably remote as 
to have no other than a speculative interest for us. It is 
referred to here, simply as illustrating the still-continued 
tendency towards complete equilibrium, through the still- 



EQUILIBRATION. 41U 

continued dissipation of sensible motion, or transformation of 
it into insensible motion. 

But there is another species of equilibration going on in 
the Solar System, with which we are more nearly concerned — 
the equilibration of that molecular motion known as heat. 
The tacit assumption hitherto current, that the Sun can con- 
tinue to give off an undiminished amount of light and heat 
through all future time, is fast being abandoned. Involv- 
ing as it does, under a disguise, the conception of power pro- 
duced out of nothing, it is of the same order as the belief that 
misleads perpetual-motion schemers. The spreading recog- 
nition of the truth that force is persistent, and that conse- 
quently whatever force is manifested under one shape must 
previously have existed under another shape, is carrying with 
it a recognition of the truth that the force known to us in 
solar radiations, is the changed form of some other force of 
which the Sun is the seat ; and that by the gradual dissipa- 
tion of these radiations into space, this other force is being 
slowly exhausted. The aggregative force by which the Sun's 
substance is drawn to his centre of gravity, is the only one 
which established physical laws warrant us in suspecting to be 
the correlate of the forces thus emanating from him : the only 
source of a known kind that can be assigned for the insensible 
motions constituting solar light and heat, is the sensible moWn 
which disappears during the progressing concentration of the 
Sun's substance. We before saw it to be a corollary from the 
nebular hypothesis, that there is such a progressing concentra- 
tion of the Sun's substance. And here remains to be added the 
further corollary, that just as in the case of the smaller mem- 
bers of the Solar System, the heat generated by concentration, 
long ago in great part radiated into space, has left only a central 
residue that now escapes but slowly ; so in the case of that im- 
mensely larger mass forming the Sun, the immensely greater 
quantity of heat generated and still in process of rapid diffusion, 
must, as the concentration approaches its limit, diminish in 



194 EQUILIBRATION. 

amount, and eventually leave only an inappreciable internal 
remnant. With or without the accompaniment of 

that hypothesis of nebular condensation, whence, as we see, 
it naturally follows, the doctrine that the Sun is gradually 
losing his heat, has now gained considerable currency ; and 
calculations have been made, both respecting the amount of 
heat and light already radiated, as compared with the amount 
that remains, and respecting the period during which active 
radiation is likely to continue. Prof. Helmholtz estimates, 
that since the time when, according to the nebular hypothesis, 
the matter composing the Solar System extended to the orbit 
of Neptune, there has been evolved by the arrest of sensible 
motion, an amount of heat 454 times as great as that which 
the Sun still has to give out. He also makes an approximate 
estimate of the rate at which this remaining -43-4 th is being 
diffused : showing that a diminution of the Sun's diameter to 
the extent of xoMroo" > would produce heat, at the present rate, 
for more than 2000 years ; or in other words, that a contrac- 
tion of To,ooi,wo °f hi s diameter, suffices to generate the 
amount of light and heat annually emitted ; and that thus, at 
the present rate of expenditure, the Sun's diameter will di- 
minish by something like ^ in. the lapse of the next million 
years.* Of course these conclusions are not to be considered 
as more than rude approximations to the truth. Until quite 
recently, we have been totally ignorant of the Sun's chemical 
composition ; and even now have obtained but a superficial 
knowledge of it. We know nothing of his internal structure ; 
and it is quite possible (probable, I believe,) that the 
assumptions respecting central density, made in the foregoing 
estimates, are wrong. But no uncertainty in the data on 
which these calculations proceed, and no consequent error in 
the inferred rate at which the Sun is expending his reserve 
of force, militates against the general proposition that this 

* See paper " On the Inter-action of Natural Forces," by Prof. Helmholtz-, 
translated by Prof. Tyndall, and published iD the Philosophical Magazine^ supple- 
ment to Vol. XI. fourth eciies. 



EQUILIBRATION. 495 

reserve of force is being expended ; and must in time be ex- 
hausted. Though, the residue of undiffused motion in the Sun, 
may be much greater than is above concluded ; though the 
rate of radiation cannot, as assumed, continue at a uniform 
rate, but must eventually go on with slowly-decreasing 
rapidity ; and though, the period at which the Sun will cease 
to afford us adequate light and heat, is very possibly far more 
distant than above implied ; yet such a period must some 
time be reached, and this is all which it here concerns us 
to observe. 

Thus while the Solar System, if evolved from diffused mat- 
ter, has illustrated the law of equilibration in the establishment 
of a complete moving equilibrium ; and while, as at present con- 
stituted, it illustrates the law of equilibration in the balancing 
of all its movements ; it also illustrates this law in the pro- 
cesses which astronomers and physicists infer are still going 
on. That motion of masses produced during Evolution, is 
being slowly re-diffused in molecular motion of the ethereal 
medium ; both through, the progressive integration of each 
mass, and the resistance to its motion through space. Infinitely 
remote as may be the state when all the motions of masses shall 
be transformed into molecular motion, and all the molecular 
motion equilibrated ; yet such, a state of complete integration 
and complete equilibration, is that towards which the changes 
now going on throughout the Solar System inevitably tend. 

§ 172. A spherical figure is the one which, can alone equi- 

i librate the forces of mutually- gravitating atoms. If the ag- 

i gregate of such atoms has a rotatory motion, the form of 

] equilibrium becomes a spheroid of greater or less oblateness, 

! according to the rate of rotation ; and it has been ascertained 

1 that the Earth is an oblate spheroid, diverging just as much 

from sphericity as is requisite to counterbalance the centrifugal 

force consequent on its velocity round its axis. That is to 

say, during the evolution of the Earth, there has been reached 

. a complete equilibrium of those forces which affect its genera] 



19t> • EQUILIBRATION. 

outline. The only other process of equilit ration 

which the Earth as a whole can exhibit, is the loss of its axial 
motion; and that any such loss is going on, we have no 
direct evidence. It has been contended, however, by Prof. 
Helmholtz, that inappreciable as may be its effect within 
known periods of time, the friction of the tidal wave must 
be slowly diminishing the Earth's rotatory motion, and must 
eventually' destroy it. Now though it seems an oversight 
to say that the Earth's rotation can thus be destroyed, since 
the extreme effect, to be reached only in infinite time by such 
a process, would be an extension of the Earth's day to the 
length of a lunation ; yet it seems clear that this friction 
of the tidal wave is a real cause of decreasing rotation. Slow 
as its action is, we must recognize it as exemplifying, under 
another form, the universal progress towards equilibrium. 

It is needless to point out, in detail, how those movements 
which the Sun's rays generate in the air and water on the 
Earth's surface, and through them in the Earth's solid sub- 
stance,* one and all teach the same general truth. Evidently 
the winds and waves and streams, as well as the denudations and 
depositions they effect, perpetually illustrate on a grand scale, 
and in endless modes, that gradual dissipation of motions 
described in the first section ; and the consequent tendency 
towards a balanced distribution of forces. Each of these 
sensible motions, produced directly or indirectly by integra- 
tion of those insensible motions communicated from the Sun, 
becomes, as we have seen, divided and subdivided into 
motions less and less sensible ; until it is finally reduced to 
insensible motions, and radiated from the Earth in the shape 
of thermal undulations. In their totality, these com- 

* Until I recently consulted his "Outlines of Astronomy" on another ques- 
tion, I was not aware that so far back as 1833, Sir John Herschel had enunci- 
ated the doctrine that "the sun's rays are the ultimate source of almost every 
motion which takes place on the surface of the earth." He expressly includes 
all geologic, meteorologic, and vital actions ; as also those which we produce by 
the combustion of coal. The late George Stephenson appears to have been 
wrongly credited with this last idea 



EQUILIBRATION, 497 

plex movements of aerial, liquid, and solid matter on the 
Earth's 3rust, constitute a dependent moving equilibrium. As 
we before saw, there is traceable throughout them an in- 
volved combination of rhythms. The unceasing circula- 
tion of water from the ocean to the land, and from the land 
back to the ocean, is a type of these various compensating 
actions ; which, in the midst of all the irregularities produced 
by their mutual interferences, maintain an average. And in 
this, as in other equilibrations of the third order, we see that 
the power from moment to moment in course of dissipation, 
is from moment to moment renewed from without : the rises 
and falls in the supply, being balanced by rises and falls in the 
expenditure ; as witness the correspondence between the mag- 
netic variations and the cyclo of the solar spots. But 
the fact it chiefly concerns us to observe, is, that this process 
must go on bringing things ever nearer to complete rest. 
These mechanical movements, meteorologic and geologic, 
which are continually being equilibrated, both temporarity 
by counter-movements and permanently by the dissipation of 
such movements and counter-movements, will slowly diminish 
as the quantity of force received from the Sun diminishes. 
As the insensible motions propagated to us from the centre 
of our system become feebler, the sensible motions here pro- 
duced by them must decrease ; and at that remote period 
when the solar heat has ceased to be appreciable, there will 
no longer be any appreciable re-distributions of matter on the 
surface of our planet. 

Thus from the highest point of view, all terrestrial changes 
arc incidents in the course of cosmical equilibration. It was 
before pointed out, (§ G9) that of the incessant alterations 
which the Earth's crust and atmosphere undergo, those which 
are not due to the still-progressing motion of the Earth's sub- 
stance towards its centre of gravity, are due to the still-pro- 
gressing motion of the Sun's substance towards its centre of 
gravity. Here it is to be remarked, that this continuance of 
integration in the Earth and in the Sun, is a continuanoe 01 



il)3 EQUILIBRATION. 

that transformation of sensible motion into insensible motion 
which we have seen ends in equilibration ; and that the ar- 
rival in each case at the extreme of integration, is the arrival 
at a state in which no more sensible motion remains to be 
transformed into insensible motion — a state in which the 
forces producing integration and the forces opposing integra- 
tion, have become equal. 

§ 173. Every living body exhibits, in a four-fold form, 
the process we are tracing out — exhibits it from moment to 
moment in the balancing of mechanical forces ; from hour to 
hour in the balancing of functions ; from year to year in the 
changes of state that compensate changes of condition ; and 
finally in the complete arrest of vital movements at death. 
Let us consider the facts under these heads. 

The sensible motion constituting each visible action of an 
organism, is soon brought to a close by some adverse force 
within or without the organism. "When the arm is raised, the 
motion given to it is antagonized partly by gravity and partly 
by the internal resistances consequent on structure ; and its 
motion, thus suffering continual deduction, ends when the arm 
has reached a position at which the forces are equilibrated. The 
limits of each systole and diastole of the heart, severally show 
us a momentary equilibrium between muscular strains that pro- 
duce opposite movements ; and each gush of blood requires 
to be immediately followed by another, because the rapid 
dissipation of its momentum would otherwise soon bring 
the mass of circulating fluid to a stand. As much in the 
actions and re-actions going on among the internal organs, 
as in the mechanical balancing of the whole body, there is at 
every instant a progressive equilibration of the motions at 
every instant produced. Viewed in their aggregate, 

and as forming a series, the organic functions constitute 
a dependent moving equilibrium — a moving equilibrium, 
of which the motive power is ever being dissipated through 
the special equilibrations just exemplified, and is ever 



EQUILIBRATION. 49'.) 

being renewed by the taking in of additional motive power. 
Food is a store of force which continually adds to the momen- 
tum of the vital actions, as much as is continually deducted 
from them by the forces overcome. All the functional move- 
ments thus maintained, are, as we have seen, rhythmical (§ 85) ; 
by their union compound rhythms of various lengths and 
complexities are produced ; and in these simple and com- 
pound rhythms, the process of equilibration, besides being 
exemplified at each extreme of every rhythm, is seen in the 
habitual preservation of a constant mean, and in the re- estab- 
lishment of that mean when accidental causes have produced 
divergence from it. When, for instance, there is a great ex- 
penditure of motion through muscular activity, there arises a 
re-active demand on those stores of latent motion which are laid 
up in the form of consumable matter throughout the tissues : 
increased respiration and increased rapidity of circulation, 
are instrumental to an extra genesis of force, that counter- 
balances the extra dissipation of force. This unusual trans- 
formation of molecular motion into sensible motion, is presently 
followed by an unusual absorption of food — the source of mole- 
cular motion ; and in proportion as there has been a prolonged 
draft upon the spare capital of the system, is there a tendency 
to a prolonged rest, during which that spare capital is replaced. 
If the deviation from the ordinary course of the functions has 
been so great as to derange them, as when violent exertion 
produces loss of appetite and loss of sleep, an equilibration is 
still eventually effected. Providing the disturbance is not 
such as to overturn the balance of the functions, and destroy 
life (in which case a complete equilibration is suddenly effected), 
the ordinary balance is by and by re-established : the return- 
ing appetite is keen in proportion as the waste has been large ; 
while sleep, sound and prolonged, makes up for previous wake- 
fulness. Xot even in those extreme cases where some excess 
has wrought a derangement that is never wholly rectified, is 
there an exception to the general law ; for in such cases the 
cycle of the functions is, after a time, equilibrated about a new 



500 EQUILIBRATION 

mean state, which thenceforth becomes the normal state of 
the individual. Thus, among the involved rhythmical changes 
constituting organic life, any disturbing force that works an 
excess of change in some direction, is gradually diminished 
and finally neutralized by antagonistic forces ; which there- 
upon work a compensating change in the opposite direction, 
and so, after more or less of oscillation, restore the medium 
condition. And this process it is, which constitutes what 
physicians call the vis medicatrix naturce. The third 

form of equilibration displayed by organic bodies, is a neces- 
sary sequence of that just illustrated. When through a 
change of habit or circumstance, an organism is permanently 
subject to some new influence, or different amount of an old 
influence, there arises, after more or less disturbance of the 
organic rhythms, a balancing of them around the new average 
condition produced by this additional influence. As temporary 
divergences of the organic rhythms are counteracted by tem- 
porary divergences of a reverse kind ; so there is an equili- 
bration of their permanent divergences by the genesis of oppos- 
ing divergences that are equally permanent. If the quantity 
of motion to be habitually generated by a muscle, becomes 
greater than before, its nutrition becomes greater than before. 
If the expenditure of the muscle bears to its nutrition, a 
greater ratio than expenditure bears to nutrition in other parts 
of the system ; the excess of nutrition becomes such that the 
muscle grows. And the cessation of its growth is the estab- 
lishment of a balance between the daily waste and the daify 
repair — the daily expenditure of force, and the amount of 
latent force daily added. The like must manifestly be the 
case with all organic modifications consequent on change of 
climate or food. This is a conclusion which we may safely 
draw without knowing the special re- arrangements that ef- 
fect the equilibration. If we see that a different mode of 
life is followed, after a period of functional derangement, 
by some altered condition of the system — if we see that this 
altered condition, becoming by and by established, continues 



EQUILIBRATION 501 

without further change ; we have no alternative but to say, 
that the new forces brought to bear on the system, have 
been compensated by the opposing forces they have evoked. 
And this is the interpretation of the process which we call 
adaptation. Finally, each organism illustrates the 

law in the ensemble of its life. At the outset it daily absorbs 
under the form of food, an amount of force greater than it 
daily expends ; and the surplus is daily equilibrated by 
growth. As maturity is approached, this surplus diminishes ; 
and in the perfect organism, the day's absorption of potential 
motion balances the day's expenditure of actual motion. That 
is to say, during adult life, there is continuously exhibited an 
equilibration of the third order. Eventually, the daily loss, 
beginning to out-balance the daily gain, there results a dimin- 
ishing amount of functional action ; the organic rhythms 
extend less and less widely on each side of the medium 
state ; and there finally results that complete equilibration 
which we call death. 

The ultimate structural state accompanying that ultimate 
functional state towards which an organism tends, both indivi- 
dually and as a species, may be deduced from one of the pro- 
positions set down in the opening section of this chapter. 
We saw that the limit of heterogeneity is arrived at when- 
ever the equilibration of any aggregate becomes complete — 
that the re- distribution of matter can continue so long only as 
there continues any motion unbalanced. Whence we found it 
to follow that the final structural arrangements, must be such 
as will meet all the forces acting on the aggregate, by equiva • 
lent antagonist forces. What is the implication in the case 
of organic aggregates ; the equilibrium of which is a moving 
one ? We have seen that the maintenance of such a moving 
equilibrium, requires the habitual genesis of internal forces 
corresponding in number, directions, and amounts to the ex- 
ternal incident forces — as many inner functions, single or 
combined, as there arc single or combined outer actions to bo 
Uiet. But functions are the correlatives of organs ; amounts 



502 EQUILIBRATION. 

of functions are, other things equal, the correlatives of sizes 
of organs ; and combinations of functions the correlatives of 
connections of organs. Hence the structural complexity 
accompanying functional equilibration, is definable as one in 
which there are as many specialized parts as are capable, 
separately and jointly, of counteracting the separate and 
joint forces amid which the organism exists. And this is the 
limit of organic heterogeneity; to which man has approached 
more nearly than any other creature. 

Groups of organisms display this universal tendency to- 
wards a balance very obviously. In § 85, every species of 
plant and animal was shown to be perpetually undergoing a 
rhythmical variation in number — now from abundance of 
food and absence of enemies rising above its average ; and 
then by a consequent scarcity of food and abundance of ene- 
mies being depressed below its average. And here we have 
to observe that there is thus maintained an equilibrium be- 
tween the sum of those forces which result in the increase of 
each race, and the sum of those forces which result in its de- 
crease. Either limit of variation is a point at which the one 
set of forces, before in excess of the other, is counterbalanced 
by it. And amid these oscillations produced by their con- 
flict, lies that average number of the species at which its 
expansive tendency is in equilibrium with surrounding 
repressive tendencies. Nor can it be questioned that this 
balancing of the preservative and destructive forces which 
Ave see going on in every race, must necessarily go on. Since 
increase of number cannot but continue until increase of 
mortality stops it ; and decrease of number cannot but con- 
tinue until it is either arrested by fertility or extinguishes the 
race entirely. 

§ 174. The equilibrations of those nervous actions which 
constitute what we know as mental life, may be classified in 
like manner with those which constitute what we dis- 



EQUILIBRATION. 003 

tinguish as bodily life. We may deal with them in the 
same order. 

Each pulse of nervous force from moment to moment gener- 
ated, (and it was shown in § 86 that nervous currents are not 
continuous but rhythmical) is met by counteracting forces ; in 
overcoming which it is dispersed and equilibrated. When 
tracing out the correlation and equivalence of forces, we saw 
that each sensation and emotion, or rather such part of it as 
remains after the excitation of associated ideas and feelings, 
is expended in working bodily changes — contractions of the 
involuntary muscles, the voluntary muscles, or both ; as also 
in a certain stimulation of secreting organs. That the move- 
ments thus initiated are ever being brought to a close by the 
opposing forces they evoke, was pointed out above ; and here it 
is to be observed that the like holds with the nervous changes 
thus initiated. Various facts prove that the arousing of a 
thought or feeling, always involves the overcoming of a cer- 
tain resistance : instance the fact that where the association 
of mental states has not been frequent, a sensible effort is 
needed to call up the one after the other ; instance the fact 
that during nervous prostration there is a comparative in- 
ability to think — the ideas will not follow one another with the 
habitual rapidity ; instance the converse fact that at times of 
unusual energy, natural or artificial, the friction of thought 
becomes relatively small, and more numerous, more remote, 
or more difficult connections of ideas are formed. That is to 
say, the wave of nervous energy each instant generated, pro- 
pagates itself throughout body and brain, along those chan- 
nels which the conditions at the instant render lines of least 
resistance ; and spreading widely in proportion to its amount, 
ends only when it is equilibrated by the resistances it every 
where meets. If we contemplate mental actions as 

extending over hours and days, we discover equilibrations 
analogous to those hourly and daily established among the 
bodily functions. In the one case as in the other, there are 



501 EQUILIBRATION. 

rhythms which exhibit a balancing of opposing forces at each 
extreme, and the maintenance of a certain general balance. 
This is seen in the daily alternation of mental activity and 
mental rest — -the forces expended during the one being compen- 
sated by the forces acquired during the other. It is also seen in 
the recurring rise and fall of each desire: each desire reaching a 
certain intensity, is equilibrated either by expenditure of the 
force it embodies, in the desired actions, or, less completely, in 
the imagination of such actions : the process ending in that sa- 
tiety, or that comparative quiescence, forming the opposite limit 
of the rhythm. And it is further manifest under a two- fold 
form, on occasions of intense joy or grief: each paroxysm of 
passion, expressing itself in vehement bodily actions, presently 
reaches an extreme whence the counteracting forces produce 
a return to a condition of moderate excitement ; and the suc- 
cessive paroxysms finally diminishing in intensit}^ end in a 
mental equilibrium either like that before existing, or par 
tially differing from it in its medium state. But 

the species of mental equilibration to be more especially noted, 
is that shown in the establishment of a correspondence be- 
tween relations among our states of consciousness and relations 
in the external world. Each outer connection of phenomena 
which we are capable of perceiving, generates, through ac- 
cumulated experiences, an inner connection of mental states ; 
and the result towards which this process tends, is the forma- 
tion of a mental connection having a relative strength that 
answers to the relative constancy of the physical connection 
represented. In conformity with the general law that 
motion pursues the line of least resistance, and that, other 
things equal, a line once taken by motion is made a line that 
will be more readily pursued by future motion ; we have seen 
that the ease with which nervous impressions follow one an- 
other, is, other things equal, great in proportion to the num- 
ber of times they have been repeated together in experience. 
Hence, corresponding to such an invariable relation as that be- 
tween the resistance of an object and some extension possessed 



EQUILIBRATION. 505 

by it, there arises an indissoluble connection in consciousness : 
and this connection, being as absolute internally as the answer- 
ing one is externally, undergoes no further change — the inner 
relation is in perfect equilibrium with the outer relation. 
Conversely, it hence happens that to such uncertain relations 
of phenomena as that between clouds and rain, there arise 
relations of ideas of a like uncertainty ; and if, under given 
aspects of the sky, the tendencies to infer fair or foul wea- 
ther, correspond to the frequencies with which fair or foul 
weather follow such aspects, the accumulation of experiences 
has balanced the mental sequences and the physical sequences. 
When it is remembered that between these extremes there 
are countless orders of external connections having different 
degrees of constancy, and that during the evolution of in- 
telligence there arise answering internal associations having 
different degrees of cohesion ; it will be seen that there is a 
progress towards equilibrium between the relations of thought 
and the relations of things. This equilibration can end 
only when each relation of things has generated in us a rela- 
tion of thought, such that on the occurrence of the conditions, 
the relation in thought arises as certainly as the relation in 
things. Supposing this state to be reached (which however it 
can be only in infinite time) experience will cease to produce 
any further mental evolution — there will have been reached a 
perfect correspondence between ideas and facts ; and the in- 
tellectual adaptation of man to his circumstances will be 
complete. The like general truths are exhibited in 

the process of moral adaptation ; which is a continual approach 
to equilibrium between the emotions and ih.e kinds of con- 
duct necessitated by surrounding conditions. The connections 
of feelings and actions, are determined in the same way 
as the connections of ideas : just as repeating the association 
of two ideas, facilitates the excitement of the one by the 
other ; so does each discharge of feeling into action, render 
the subsequent discharge of such feeling into such action 
Taore easy. Hence it happens that if an individual is placed 
23 



50G EQUILIBRATION. 

permanently in conditions which demand more action of a 
special kind than has before been requisite, or than is natural 
to him — if the pressure of the painful feelings which these 
conditions entail when disregarded, impels him to perform 
this action to a greater extent — if by every more frequent or. 
more lengthened performance of it under such pressure, the 
resistance is somewhat diminished ; then, clearly, there 
is an advance towards a balance between the demand for 
this kind of action and the supply of it. Either in him- 
self, or in his descendants continuing to live under these 
conditions, enforced repetition must eventually bring about 
a state in which this mode of directing the energies will be 
no more repugnant than the various other modes previously 
natural to the race. Hence the limit towards which emotional 
modification perpetually tends, and to which it must approach 
indefinitely near (though it can absolutely reach it only in 
infinite time) is a combination of desires that correspond to 
all the different orders of activity which the circumstances of 
life call for — desires severally proportionate in strength to 
the needs for these orders of activity ; and severally satisfied 
by these orders of activity. In what we distinguish as 
acquired habits, and in the moral differences of races and 
nations produced by habits that are maintained through suc- 
cessive generations, we have countless illustrations of this 
progressive adaptation ; which can cease only with the estab- 
lishment of a complete equilibrium between constitution and 
conditions. 

Possibly 3ome will fail to see how the equilibrations de- 
bcribed in this section, can be classed with those preceding 
them ; and will be inclined to say that what are here set 
down as facts, are but analogies. Nevertheless such equi- 
librations are as truly physical as the rest. To show this 
fully, would require a more detailed analysis than can now be 
entered on. For the present it must suffice to point out, as 
before (§ 71), that what we know subjectively as states of 



EQUILIBRATION. 507 

consciousness, are, objectively, modes of force ; that so much 
feeling is the correlate of so much motion; that the performance 
of any bodily action is the transformation of a certain amount 
of feeling into its equivalent amount of motion ; that this 
bodily action is met by forces which it is expended in over- 
coming ; and that the necessity for the frequent repetition of 
this action, implies the frequent recurrence of forces to oe so 
overcome. Hence the existence in any individual of an 
emotional stimulus that is in equilibrium with certain ex- 
ternal requirements, is literally the habitual production of a 
certain specialized portion of nervous energy, equivalent in 
amount to a certain order of external resistances that are 
habitually met. And thus the ultimate state, forming the 
limit towards which Evolution caiTies us, is one in which the 
kinds and quantities of mental energy daily generated and 
transformed into motions, are equivalent to, or in equilibrium 
with, the various orders and degrees of surrounding forces 
which antagonize such motions. 

§ 175. Each society taken as a whole, displays the process 
of equilibration in the continuous adjustment of its population 
to its means of subsistence. A tribe of men living on wild 
animals and fruits, is manifestly, like every tribe of inferior 
creatures, always oscillating about that average number which 
the locality can support. Though by artificial production, and 
by successive improvements in artificial production, a superior 
race continually alters the limit which external conditions 
put to population ; yet there is ever a checking of population 
at the temporary limit reached. It is true that where the 
limit is being so rapidly changed as among ourselves, there 
is no actual stoppage : there is only a rhythmical variation 
in the rate of increase. But in noting the causes of this 
rhythmical variation— in watching how, during periods of 
abundance, the proportion of marriages increases, and how 
it decreases during periods of scarcity ; it will be seen that tho 



508 EQUILIBRATION. 

expansive force produces unusual advance whenever the re- 
pressive force diminishes, and vice versa ; and thus there i« us 
near a balancing of the two as the changing conditions permit. 
The internal actions constituting social functions, exemplify 
the general principle no less clearly. Supply and demand 
are continually being adjusted throughout all industrial pro- 
cesses ; and this equilibration is interpretable in the same way 
as preceding ones. The production and distribution of a 
commodit} r , is the expression of a certain aggregate of forces 
causing special kinds and amounts of motion. The price of 
this commodity, is the measure of a certain other aggregate 
of forces expended by the labourer who purchases it, in other 
kinds and amounts of motion. And the variations of price 
represent a rhythmical balancing of these forces. Every rise 
or fall in the rate of interest, or change in the value of a 
particular security, implies a conflict of forces in which some, 
becoming temporarily predominant, cause a movement that 
is presently arrested or equilibrated by the increase of oppos- 
ing forces ; and amid these daily and hourly oscillations, lies a 
more slowly- varying medium, into which the value ever tends 
to settle ; and woidd settle but for the constant addition of new 
influences. As in the individual organism so in the 

social organism, functional equilibrations generate structural 
equilibrations. When on the workers in any trade there 
comes an increased demand, and when in return for the in- 
creased supply, there is given to them an amount of other com- 
modities larger than was before habitual — when, consequently, 
the resistances overcome by them in sustaining life are less 
than the resistances overcome by other workers ; there 
results a flow of other workers into this trade. This 
flow continues until the. extra demand is met, and the 
wages so far fall again, that the total resistance over 
come in obtaining a given amount of produce, is as great in 
this newly-adopted occupation as in the occupations whence 
it drew recruits. The occurrence ot motion along lines cf 
least resistance, was before shown to necessitate the growth 






EQUILIBRATION 509 

of population in those places where the labour required for 
self-maintenance is the smallest ; and here we further see 
that those engaged in any such advantageous locality, or 
advantageous business, must multiply till there arises an 
approximate balance between this locality or business and 
others accessible to the same citizens. In determining 
the career of every youth, we see an estimation by parents of 
the respective advantages offered by all that are available, 
and a choice of the one which promises best ; and through 
the consequent influx into trades that are at the time most 
profitable, and the withholding of recruits from over-stocked 
trades, there is insured a general equipoise between the 
power of each social organ and the function it has to perform. 
The various industrial actions and re-actions thus con- 
tinually alternating, constitute a dependent moving equili- 
brium like that which is maintained among the functions 
of an individual organism. And this dependent moving 
equilibrium parallels those already contemplated, in its tend- 
ency to become more complete. During early stages of 
social evolution, while yet the resources of the locality inha- 
bited are unexplored, and the arts of production undeveloped, 
there is never anything more than a temporary and partial 
balancing of such actions, under the form of acceleration or 
retardation of growth. But when a society approaches the 
maturity of that type on which it is organized, the vari- 
ous industrial activities settle down into a comparatively 
constant state. Moreover, it is observable that advance in 
organization, as well as advance in growth, is conducive to a 
better equilibrium of industrial functions. While the diffu- 
sion of mercantile information is slow, and the means of 
transport deficient, the adjustment of supply to demand is 
extremely imperfect : great over-production of each com- 
modity followed by great under-production, constitute a 
rhythm having extremes that depart very widely from the 
mean state in which demand and supply arc equilibrated. 
But when good roads arc made, and there is a rapid diffusion of 



610 



EQUILIBRATION. 



printed or written intelligence, and still more when railways 
and telegraphs come into existence — when the periodical 
fairs of early days lapse into weekly markets, and these into 
daily markets ; there is gradually produced a better balance 
of production and consumption. Extra demand is much 
more quickly followed by augmented supply ; and the rapid 
oscillations of price within narrow limits on either side of a 
comparatively uniform mean, indicate a near approach to 
equilibrium. Evidently this industrial progress has 

for its limit, that which Mr. Mill has called " the sta- 
tionary state." When population shall have become dense 
over all habitable parts of the globe ; when the resources of 
every region have been fully explored ; and when the product- 
ive arts admit of no further improvements ; there must result 
an almost complete balance, both between the fertility and 
mortality of each society, and between its producing and 
consuming activities. Each society will exhibit only minor 
deviations from its average number, and the rhythm of its 
industrial functions will go on from day to day and year 
to year with, comparatively insignificant perturbations. This 
limit, however, though we are inevitably advancing towards 
it, is indefinitely remote ; and can never indeed be absolutely 
reached. The peopling of the Earth up to the point sup- 
posed, cannot take place by simple spreading. In the future, 
as in the past, the process will be carried on rhythmically, 
by waves of emigration from new and higher centres of 
civilization successively arising ; and by the supplanting of 
inferior races by the superior races they beget; and the 
process so carried on must be extremely slow. ISTor does 
it seem to me that such an equilibration will, as Mr. Mill 
suggests, leave scope for further mental culture and moral 
progress ; but rather that the approximation to it must 
be simultaneous with the approximation to complete equi- 
librium between man's nature and the conditions of his 
existence. 

One other kind of social equilibration has still to be con- 



EQUILIBRATION. 511 

aidered : — that wliicli results in the establishment of govern- 
mental institutions, and which becomes complete as these 
institutions fall into harmony with the desires of the people. 
There is a demand and supply in political affairs as in indus- 
trial affairs ; and in the one case as in the other, the antag- 
onist forces produce a rhj'thm which, at first extreme in its 
oscillations, slowly settles down into a moving equilibrium of 
comparative regularity. Those aggressive impulses inherited 
from the pre-social state — those tendencies to seek self-satis- 
faction regardless of injury to other beings, which are essen- 
tial to a predatory life, constitute an anti-social force, tending 
ever to cause conflict and eventual separation of citizens. 
Contrariwise, those desires whose ends can be achieved 
only by union, as well as those sentiments which find satisfac- 
tion through intercourse with fellow-men, and those result- 
ing in what we call loyalty, are forces tending to keep the 
units of a society together. On the one hand, there is in 
each citizen, more or less of resistance against all restraints 
imposed on his actions by other citizens : a resistance which, 
tending continually to widen each individual's sphere of 
action, and reciprocally to limit the spheres of action 
of other individuals, constitutes a repulsive force mutually 
exercised by the members of a social aggregate. On the 
other hand, the general sympathy of man for man, and 
the more special sympathy of each variety of man for others 
of the same variety, together with sundry allied feelings 
which the social state 'gratifies, act as an attractive force, 
tending ever to keep united those who have a common ances- 
try. And since the resistances to be overcome in satisfying 
the totality of their desires when living separately, are greater 
than the resistances to be overcome in satisfying the totality 
of their desires when living together, there is a residuary 
force that prevents their separation. Like all other opposing 
forces, those exerted by citizens on each other, are ever 
producing alternating movements, which, at first extreme, 
undergo a gradual diminution on the way to ultimate oquili- 



572 EQUILIBRATION. 

brium. In small, undeveloped societies, marked rliytlims 
result from these conflicting tendencies. A tribe whose 
members have held together for a generation or two, reaches 
a size at which it will not hold together ; and on the occur- 
rence of some event causing unusual antagonism among its 
members, divides. Each primitive nation, depending largely 
for its continued union on the character of its chief, exhibits 
wide oscillations between an extreme in which the subjects 
are under rigid restraint, and an extreme in which the 
restraint is not enough to prevent disorder. In more 
advanced nations of like type, we always find violent ac- 
tions and reactions of the same essential nature — " despotism 
tempered by assassination," characterizing a political state 
in which unbearable repression from time to time brings 
about a bursting of all bonds. In this familiar fact, that a 
period of tyranny is followed by a period of license and 
vice versa, we see how these opposing forces are ever equili- 
brating each other ; and we also see, in the tendency of such 
movements and counter- movements to become more moder- 
ate, how the equilibration progresses towards completeness. 
The conflicts between Conservatism (which stands for the 
restraints of society over the individual) and Reform (which 
stands for the liberty of the individual against society), fall 
within slowly approximating limits ; so that the temporary 
predominance of either, produces a less marked deviation 
from the medium state. This process, now so far 

advanced among ourselves that the oscillations are compara- 
tively unobtrusive, must go on till the balance between the 
antagonist forces approaches indefinitely near perfection. 
For, as we have already seen, the adaptation of man's nature 
to the conditions of his existence, cannot cease until the in- 
ternal forces which we know as feelings are in equilibrium 
with the external forces they encounter. And the establish- 
ment of this equilibrium, is the arrival at a state of human 
nature and social organization, such that the individual has 
no desires but those which may be satisfied without exceed- 



EQUILIBRATION. 513 

ing his proper sphere of action, while society maintains no 
restraints but those which the individual voluntarity re- 
spects. The progressive extension of the liberty of citizens, 
and the reciprocal removal of political restrictions, are the 
steps by which we advance towards this state. And the ulti- 
mate abolition of all limits to the freedom of each, save those 
imposed by the like freedom of all, must result from the 
complete equilibration between man's desires and the conduct 
necessitated by surrounding conditions. 

Of course in this case, as in the preceding ones, there is 
thus involved a limit to the increase of heterogeneity. A 
few pages back, we reached the conclusion that each advance 
in mental evolution, is the establishment of some further 
internal action, corresponding to some further external 
action — some additional connection of ideas or feelings, 
answering to some before unknown or unantagonized con- 
nection of phenomena. We inferred that each such new 
function, involving some new modification of structure, 
implies an increase of heterogeneity ; and that thus, in- 
crease of heterogeneity must go on, while there remain any 
outer relations affecting the organism which are unbalanced 
by inner relations. AVhence we saw it to follow that in- 
crease of heterogeneity can come to an end only as equilibra- 
tion is completed. Evidently the like must simultaneously 
take place with society. Each increment of heterogeneity 
in the individual, must directly or indirectly involve, as 
cause or consequence, some increment of heterogeneity in 
the arrangements of the aggregate of individuals. And the 
limit to social complexity can be arrived at, only with the 
establishment of the equilibrium, just described, between 
social and individual forces. 

§ 176. Here presents itself a final question, which has pro- 
bably been taking a more or less distinct shape in the minds 
of many, while reading this chapter. " If Evolution of every 
kind, is an increase in complexity of structure and function 



514 EQUILIBRATION. 

that is incidental to the nniversal process of equilibration, 
and if equilibration must end in complete rest ; what is the 
fate towards which all things tend ? If the Solar System 
is slowly dissipating its forces — if the Sun is losing his heat 
at a rate which will tell in millions of years — if with 
diminution of the Sun's radiations there must go on a 
diminution in the activity of geologic and meteorologic 
processes as well as in the quantity of vegetal and animal 
existence — if Man and Society are similarly dependent on 
this supply of force that is gradually coming to an end ; are 
we not manifestly progressing towards omnipresent death V 9 

That such a state must be the outcome of the processes 
everywhere going on, seems beyond doubt. Whether any 
ulterior process may reverse these changes,, and initiate a 
new life, is a question to be considered hereafter. For the 
p'resent it must suffice that the proximate end of all the 
transformations we have traced, is a state of quiescence. 
This admits of a priori proof. It will soon become apparent 
that the law of equilibration, not less than the preceding 
general laws, is deducible from the persistence of force. 

We have seen (§ 74) that phenomena are interpretable 
only as the results of universally- coexistent forces of attrac- 
tion and repulsion. These universally- coexistent forces of at- 
traction and repulsion, are, indeed, the complementary aspects 
of that absolutely persistent force which is the ultimate datum 
of consciousness. Just in the same way that the equality of 
action and re- action is a corollary from the persistence of 
force, since their inequality would imply the disappearance 
of the differential force into nothing, or its appearance out of 
nothing ; so, we cannot become conscious of an attractive 
force without becoming simultaneously conscious of an equal 
and opposite repulsive force. For every experience of a 
muscular tension, (under which form alone we can immedi- 
ately know an attractive foroe,) presupposes an equivalent 
resistance — a resistance shown in the counter-balancing pres- 
sure of the body against neighbouring objects, or in thai 



EQUILIBRATION. bio 

absorption, of force which gives motion to the body, or in 
both — a resistance which we cannot conceive as other than 
equal to the tension, without conceiving force to have either 
appeared or disappeared, and so denying the persistence of 
force. And from this necessary correlation, results our ina- 
bility, before pointed out, of interpreting any phenomena 
save in terms of these correlatives — an inability shown alike 
in the compulsion we are under to think of the statical forces 
which tangible matter displays, as due to the attraction and 
repulsion of its atoms, and in the compulsion we are under to 
think of dynamical forces exercised through space, by regard- 
ing space as filled with atoms similarly endowed. Thus from 
the existence of a force that is for ever unchangeable in quan- 
tity, there follows, as a necessary corollary, the co-extensive 
existence of these opposite forms of force — forms under 
which the conditions of our consciousness oblige us to repre- 
sent that absolute force which transcends our knowledge. 

But the forces of attraction and repulsion being univer- 
sally co- existent, it follows, as before shown, that all motion 
is motion under resistance. Units of matter, solid, liquid, 
aeriform, or ethereal, filling the space which any moving 
body traverses, offer to such body the resistance consequent 
on their cohesion, or their inertia, or both. In other words, 
the denser or rarer medium which occupies the places from 
moment to moment passed through by such moving hodj, 
having to be expelled from them, as much motion is ab- 
stracted from the moving body as is given to the medium in 
expelling it from these places. This being the condition 
under which all motion occurs, two corollaries result. The 
first is, that the deductions perpetually made by the com- 
munication of motion to the resisting medium, cannot but 
bring the motion of the body to an end in a longer or shorter 
time. The second is, that the motion of the body cannot 
cease until these deductions destroy it. In other words, 
movement must continue till equilibration takes place; and 
equilibration must eventually take place. Both these are 



51G EQUILIBRATION. 

manifest deductions from the persistence of force. To say 
that the whole or part of a body's motion can disappear, save 
by transfer to something which resists its motion, is to say 
that the whole or part of its motion can disappear without 
effect; which is to deny the persistence of force. Con- 
versely, to say that the medium traversed can be moved out of 
the body's path, without deducting from the body's motion, 
is to say that motion of the medium can arise out of no- 
thing ; which is to deny the persistence of force. Hence 
this primordial truth is our immediate warrant for the con- 
clusions, that the changes which Evolution presents, cannot 
end until equilibrium is reached ; and that equilibrium must 
at last be reached. 

Equally necessary, because equally deducible from this 
same truth that transcends proof, are the foregoing proposi- 
tions respecting the establishment and maintenance of mov- 
ing equilibria, under their several aspects. It follows from 
the persistence of force, that the various motions possessed 
by any aggregate, either as a whole or among its parts, must 
be severally dissipated by the resistances they severally en- 
counter ; and that thus, such of them as are least in amount, 
or meet with greatest opposition, or both, will be brought to 
a close while the others continue. Hence in every diversely 
moving aggregate, there results a comparatively early dissi- 
pation of motions which are smaller and much resisted ; fol- 
lowed by long- continuance of the larger and less-resisted 
motions ; and so there arise dependent and independent 
moving equilibria. Hence also may be inferred the tend- 
ency to conservation of such moving equilibria. For the 
new motion given to the parts of a moving equilibrium by 
a disturbing force, must either be of such kind and amount 
that it cannot be dissipated before the pre-existing motions, 
in which case it brings the moving equilibrium to an end ; 
or else it must be of such kind and amount that it can be 
dissipated before the pre-existing motions, in which case 
the moving equilibrium is re-established. 



EQUILIBRATION. 517 

Thus from the persistence of force follow, not only the 
rarious direct and indirect equilibrations going on around., 
together with that cosmical equilibration which, brings Evo- 
lution under all its forms to a close ; but also those less 
manifest equilibrations shown in the re-adjustments of 
moving equilibria that have been disturbed. By this 
idtimate principle is provable the tendency of every 
organism, disordered by some unusual influence, to return to 
a balanced state. To it also may be traced the capacity, 
possessed in a slight degree by individuals, and in a greater 
degree by species, of becoming adapted to new circumstances. 
And not less does it afford a basis for the inference, that 
there is a gradual advance towards harmony between man's 
mental nature and the conditions of his existence. After 
finding that from it are deducible the various characteristics 
of Evolution, we finally draw from it a warrant for the 
belief, that Evolution can end only in the establishment oi 
the greatest perfection and the most complete happiness. 



CHAPTER XXIIL 

DISSOLUTION. 

§ 177. When, in Chapter XIL, we glanced at the cycle of 
changes through which every existence passes,, in its pro- 
gress from the imperceptible to the perceptible and again 
from the perceptible to the imperceptible — when these 
opposite re- distributions of matter and motion were 
severally distinguished as Evolution and Dissolution ; the 
natures of the two, and the conditions under which they 
respectively occur, were specified in general terms. Since 
then, we have contemplated the phenomena of Evolution in 
detail; and have followed them out to those states of equili- 
brium in which they all end. To complete the argument 
we must now contemplate, somewhat more in detail than 
before, the complementary phenomena of Dissolution. Not, 
indeed, that we need dwell long on Dissolution, which has 
none of those various and interesting aspects which Evolu- 
tion presents ; but something more must be said than has 
yet been said. 

It was shown that neither of these two antagonist pro- 
cesses ever goes on absolutely unqualified by the other; 
and that a change towards either is a differential result of 
the conflict between them. An evolving aggregate, while 
on the average losing motion and integrating, is always, in 
one way or other, receiving some motion and to that extent 
disintegrating ; and after the integrative changes have 



DISSOLUTION 519 

ceased to predominate, tlie reception of motion, though 
perpetually checked by its dissipation, constantly tends to 
produce a reverse transformation, and eventually does pro- 
duce it. "Wlien Evolution has run its course — when the 
aggregate has at length parted with its excess of motion, 
and habitually receives as much from its environment as it 
habitually loses — when it has reached that equilibrium in 
which its changes end ; it thereafter remains subject to all 
actions in its environment which may increase the quantity 
of motion it contains, and which in the lapse of time 
are sure, either slowly or suddenly, to give its parts such 
excess of motion as will cause disintegration. According 
as its equilibrium is a very unstable or a very stable one, 
its dissolution may come quickly or may be indefinitely de- 
layed — may occur in a few days or may be postponed for 
millions of years. But exposed as it is to the contingencies 
not simply of its immediate neighbourhood but of a Universe 
everywhere in motion, the period must at last come when, 
either alone or in company with surrounding aggregates, it 
has its parts dispersed. 

The process of dissolution so caused, we have here to look 
at as it takes place in aggregates of different orders. The 
course of change being the reverse of that hitherto traced, 
we may properly take the illustrations of it in the reverse 
order — beginning with the most complex and ending with 
the most simple. 

§ 178. Regarding the evolution of a society as at once 
an increase in the number of individuals integrated into a 
corporate body, an increase in the masses and varieties of 
the parts into which this corporate body divides as well as 
of the actions called their functions, and an increase in the 
degree of combination among these masses and their func- 
tions ; we shall see that social dissolution conforms to tho 
general law in being, materially considered, a disintegration, 
and, dynamically considrrrrl, a decrease in the movements 



520 DISSOLUTION. 

of wholes and an increase in the movements of parts ; while 
it further conforms to the general law in being caused by 
an excess of motion in some way or other received from 
without. 

It is obvious that the social dissolution which follows the 
aggression of another nation, and which, as history shows 
us, is apt to occur when social evolution has ended and 
decay has begun, is, under its broadest aspect, the incidence 
of a new external motion; and when, as sometimes 
happens, the conquered society is dispersed, its dissolu- 
tion is literally a cessation of those corporate movements 
which the society, both in its army and in its industrial 
bodies, presented, and a lapse into individual or uncombined 
movements — the motion of units replaces the motion of 
masses. 

It cannot be questioned, either, that when plague or famine 
at home, or a revolution abroad, gives to any society an un- 
usual shock that causes disorder, or incipient dissolution, 
there results a decrease of integrated movements and an in- 
crease of disintegrated movements. As the disorder pro- 
gresses, the political actions previously combined under one 
government become uncombined : there arise the antagon- 
istic actions of riot or revolt. Simultaneously, the indus- 
trial and commercial processes that were co-ordinated 
throughout the whole body politic, are broken up; and 
only the local, or small, trading transactions continue. 
And each further disorganizing change diminishes the 
joint operations by which men satisfy their wants, and 
leaves them to satisfy their wants, so far as they can, by 
separate operations. Of the way in which such 

(1 isintegrations are liable to be set up in a society that has 
evolved to the limit of its type, and reached a state of 
moving equilibrium, a good illustration is furnished by 
Japan. The finished fabric into which its people had 
organized themselves, maintained an almost constant state 
so long as it was preserved from fresh external forces. But 



DISSOLUTION. 521 

as soon as it received an impact from European civilization, 
partly by armed aggression, partly by commercial impulse, 
partly by the influence of ideas, this fabric began to fall tc 
pieces. There is now in progress a political dissolution. 
Probably a political re-organization will follow ; but, be this 
as it may, the change thus far produced by an outer action 
is a change towards dissolution — a change from integrated 
motions to disintegrated motions. 

Even where a society that has developed into the highest 
form permitted by the characters of its units, begins there- 
after to dwindle and decay, the progressive dissolution i» 
still essentially of the same nature. Decline of numbers is, 
in such case, brought about partly by emigration ; for a 
society having the fixed structure in which evolution ends, 
is necessarily one that will not yield and modify under 
pressure of population : so long as its structure will yield 
and modify, it is still evolving. Hence the surplus popula- 
tion continually produced, not held together by an organiza- 
tion that adapts itself to an augmenting number, is continually 
dispersed : the influences brought to bear on the citizens by 
other societies, cause their detachment, and there is an in- 
crease in the uncombined motions of units instead of an in- 
crease of combined motions. Gradually as rigidity becomes 
greater, and the society becomes still less capable of being 
re-moulded into the form required for successful competition 
with growing and more plastic societies, the number of 
citizens who can live within its unyielding framework 
becomes positively smaller. Hence it dwindles both 
through continued emigration and through, the diminished 
multiplication that follows innutrition. And this further 
dwindling or dissolution, caused by the number of those 
who die becoming greater than the number of those 

, who survive long enough to rear offspring, is similarly a 
decrease in the total quantity of combined motion and an 
increase in the quantity of uncombined motion — as we shall 

f presently see when we come to deal with individual dissolution. 



522 DISSOLUTION. 

Considering, then, that social aggregates differ so much 
from aggregates of other kinds, formed as they are of units 
held together loosely and indirectly, in such variable ways 
by such complex forces, the process of dissolution among 
them conforms to the general law quite as clearly as could 
be expected. 

§ 179. When from these super -organic aggregates we de- 
scend to organic aggregates, the truth that Dissolution is a 
disintegration of matter, caused by the reception of ad- 
ditional motion from without, becomes easily demonstrable. 
We will look first at the transformation and afterwards at 
its cause. 

Death, or that final equilibration which precedes dissolu- 
tion, is the bringing to a close of all those conspicuous 
integrated motions that arose during evolution. The 
impulsions of the body from place to place first cease ; pre- 
sently the limbs cannot be stirred ; later still the respira- 
tory actions stop ; finally the heart becomes stationary, and, 
with it, the circulating fluids. That is, the transformation 
of molecular motion into the motion of masses, comes to 
an end; and each of these motions of masses, as it ends, 
disappears into molecular motions. What next takes place ? 
We cannot say that there is any further transformation of 
sensible movements into insensible movements ; for sensible 
movements no longer exist. Nevertheless, the process of 
decay involves an increase of insensible movements ; since 
these are far greater in the gases generated by decomposi- 
tion, than they are in the fluid-solid matters out of which the 
gases arise. Each of the complex chemical units composing 
an organic body, possesses a rhythmic motion in which its 
many component units jointly partake. When decomposition 
breaks up these complex molecules, and their constituents 
assume gaseous forms, there is, besides that increase of 
motion implied by the diffusion, a resolution of such 
motions as the aggregate molecules possessed, into motions 






DISSOLUTION. blS 

}f their constituent molecules. So that in organic dissolu- 
tion we have, first, an end put to that transformation of the 
motion of units into the motion of aggregates, which con- 
stitutes evolution, dynamically considered; and we have 
also, though in a subtler sense, a transformation of tho 
motion of ae^re^ates into the motion of units. Still it is 
not thus shown that organic dissolution fully answers to the 
general definition of dissolution — the absorption of motion 
and concomitant disintegration of matter. The disintegra- 
tion of matter is, indeed, conspicuous enough ; but the ab- 
sorption of motion is not conspicuous. True, the fact that 
motion has been absorbed may be inferred from the fact 
that the particles previously integrated into a solid mass, 
occupying a small space, have most of them moved away 
from one another and now occupy a great space ; for the 
motion implied by this transposition must have been ob- 
tained from somewhere. Bat its source is not obvious. A 
little search, however, will bring us to its derivation. 

At a temperature below the freezing point of water, de- 
composition of organic matter does not take place — the 
integrated motions of the highly integrated molecules are 
not resolved into the disintegrated motions of their com- 
ponent molecules. Dead bodies kept at this temperature 

1 for an indefinitely long period, are prevented from decom- 
posing for an indefinitely long period : witness the frozen 
carcases of Mammoths — Elephants of a species long ago 

I extinct — that are found imbedded in the ice at the mouths 
of Siberian rivers; and which, though they have been there 

I for many thousands of years, have flesh so fresh that when 
at length exposed, it is devoured by wolves. What now is 
the meaniug of such exceptional preservations ? A body 
kept below freezing point, is a body which receives very 

j little heat by radiation or conduction ; and the reception of 
but little heat is the reception of but little molecular motion. 
That is to say, in an environment which docs not furnish it 
with molecular motion passiDg a certain amount, an organic 



524 DISSOLUTION. 

body does not undergo dissolution. Confirmatory 

evidence is yielded by the variations in rate of dissolution 
which accompany variations of temperature. All know that 
in cool weather the organic substances used in our house- 
holds keep longer,, as we say, than in hot weather. Equally 
certain, if less familiar, is the fact that in tropical climates 
decay proceeds much more rapidly than in temperate 
climates. Thus, in proportion as the molecular motion of 
surrounding matter is great, the dead organism receives an 
abundant supply of motion to replace the motion continually 
taken up by the dispersing molecules of the gases into 
which it is being disintegrated. The still quicker 

decompositions produced by exposure to artificially-raised 
temperatures, afford further proofs ; as instance those which 
occur in cooking. The charred surfaces of parts that have 
been much heated, show us that the molecular motion 
absorbed has served to dissipate in gaseous forms all the 
elements but the carbon. 

The nature and cause of Dissolution are thus clearly dis- 
played by the aggregates which so clearly display the 
nature and cause of Evolution. One of these aggregates 
being composed of that peculiar matter to which a large 
quantity of constitutional motion gives great plasticity, and 
the ability to evolve into a highly compound form (§ 103) ; 
we see that after evolution has ceased, a very moderate 
amount of molecular motion, added to that already locked 
up in its peculiar matter, suffices to cause dissolution. 
Though at death there is reached a stable equilibrium 
among the sensible masses, or organs, which make up the 
body; yet, as the insensible units or molecules of which 
these organs consist are in unstable equilibrium, small 
incident forces suffice to overthrow them, and hence disin- 
tegration proceeds rapidly. 

§ 180. Most inorganic aggregates, having arrived at 



DISSOLUTION. 525 

dense forms in which comparatively little motion is retained, 
remain long without marked changes. Each has lost so 
much motion in passing from the disintegrated to the inte- 
grated state, that much motion must "be given to it to 
cause resumption of the disintegrated state; and an im- 
mense time may elapse before there occur in the environ- 
ment, changes great enough to communicate to it the 
requisite quantity of motion. We will look first at those 
exceptional inorganic aggregates which retain much motion, 
and therefore readily undergo dissolution. s 

Among these are the liquids and volatile solids which 
dissipate under ordinary conditions — water that evaporates, 
carbonate of ammonia that wastes away by the dispersion of 
its molecules. In all such cases motion is absorbed; and 
always the dissolution is rapid in proportion as the quantity 
of heat or motion which the aggregated mass receives from 
its environment is great. Next come the cases in 

which the molecules of a highly integrated or solid aggre- 
gate, are dispersed among the molecules of a less integrated 
or liquid aggregate; as in aqueous solutions. One evidence 
that this disintegration of matter has for its concomitant 
the absorption of motion, is that soluble substances dissolve 
the more quickly the hotter the water : supposing always that 
no elective affinity comes into play. Another and still more 
conclusive evidence is, that when crystals of a given tem- 
perature are placed in water of the same temperature, the 
process of solution is accompanied by a fall of tempera- 
ture — often a very great one. Omitting instances in 
which some chemical action takes place between the salt 
and the water, it is a uniform law that the motion which 
disperses the molecules of the salt through the water, is 
at the expense of the molecular motion possessed by the 
water. 

Masses of sediment accumulated into strata, afterwards 
compressed by many thousands of feet of superincumbent, 
strata, and reduced in course of time to a solid state, 



52tf DISSOLUTION. 

may remain for millions of years unchanged ; but in sub- 
sequent millions of years they are inevitably exposed to 
disintegrating actions. Kaised along with other such masses 
into a continent, denuded and exposed to rain, frost, and 
the grinding actions of glaciers, they have their particles 
gradually separated, carried away, and widely dispersed. 
Or when, as otherwise happens, the encroaching sea reaches 
them, the undermined cliffs which they form fall from time 
to time, breaking into fragments of all sizes ; the waves, 
rolling about the small pieces, and in storms turning over 
and knocking together the larger blocks, reduce them to 
boulders and pebbles, and at last to sand and mud. Even if 
portions of the disintegrated strata accumulate into shingle 
banks, which afterwards become solidified, the process of 
dissolution, arrested though it may be for some enormous 
geologic period, is finally resumed. As many a shore 
shows us, the conglomerate itself is sooner or later subject 
to the like processes ; and its cemented masses of hetero- 
geneous components, lying on the beach, are broken up and 
worn away by impact and attrition — that is, by communicated 
mechanical motion. 

When not thus effected, the disintegration is effected by 
communicated molecular motion. The consolidated stratum, 
located in some area of subsidence, and brought down nearer 
and nearer to the regions occupied by molten matter, comes 
eventually to have its particles brought to a plastic state by 
heat, or finally melted down into liquid. Whatever may be 
its subsequent transformations, the transformation then ex- 
hibited by it is an absorption of motion and disintegration 
of matter. 

Be it simple or compound, small or large, a crystal or a 
mountain chain, every inorganic aggregate on the Earth, 
thus, at some time or other, undergoes a reversal of those, 
changes undergone during its evolution. Not that it usually 
passes back completely from the perceptible into the imper- 
ceptible; as organic aggregates do in great part, if not 



DISSOLUTION. 527 

wholly. But still its disintegration and dispersion carry 
it some distance on the way towards the imperceptible; and 
there are reasons for thinking that its arrival there is 
but delayed. At a period immeasurably remote, every such 
inorganic aggregate, along with all undissipated remnants 
of organic aggregates, must be reduced to a state 
of gaseous diffusion, and so complete the cycle of its 
changes. 

§ 181. For the Earth as a whole, when it has gone 
through the entire series of its ascending transformations, 
must remain, like all smaller aggregates, exposed to the 
contingencies of its environment ; and in the course of 
those ceaseless changes in progress throughout a Universe 
of which all parts are in motion, must, at some period be- 
yond the utmost stretch of imagination, be subject to forces 
sufficient to cause its complete disintegration. Let us 
glance at the forces competent to disintegrate it. 

In his essay on "The Inter-action of Natural Forces," 
Prof. Helmholtz states the thermal equivalent of the Earth's 
movement through space, as calculated on the now received 
datum of Mr. Joule. "If our Earth," he says, "were by a 
sudden shock brought to rest in her orbit, — which is not to 
be feared in the existing arrangement of our system — by 
such a shock a quantity of heat would be generated equal 
to that produced by the combustion of fourteen such Earths 
of solid coal. Making the most unfavourable assumption 
as to its capacity for heat, that is, placing it equal to that 
of water, the mass of the Earth would thereby be heated 
11,200 degrees; it would therefore be quite fused, and for 
the most part reduced to vapour. If then the Earth, 
after having been thus brought to rest, should fall 
into the Sun, which of course would be the case, the 
quantity of heat developed by the shock would be 400 
times greater." Now though this calculation 

seems to be nothing to the purpose, since the Earth is 



528 DISSOLUTION. 

not likely to be suddenly arrested in its orbit and not likely 
therefore suddenly to fall into the Sun ; yet, as before pointed 
out (§ 171),, there is a force at work which it is held must 
at last bring the Earth into the Sun. This force is the re- 
sistance of the ethereal medium. From ethereal resistance 
is inferred a retardation of all moving bodies in the Solar 
System — a retardation which certain astronomers contend 
even now shows its effects in the relative nearness to one 
another of the orbits of the older planets. If/ then, retarda- 
tion is going on, there must come a time, no matter how 
remote, when the slowly diminishing orbit of the Earth will 
end in the Sun ; and though the quantity of molar motion 
to be then transformed into molecular motion, will not be 
so great as that which the calculation of Helmholtz supposes, 
it will be great enough to reduce the substance of the Earth 
to a gaseous state. 

This dissolution of the Earth, and, at intervals, of every 
other planet, is not, however, a dissolution of the Solar 
System. Yiewed in their ensemble, all the changes ex- 
hibited throughout the Solar System, are incidents accom- 
panying the integration of the entire matter composing it : 
the local integration of which each planet is the scene, 
completing itself long before the general integration is 
complete. But each secondary mass having gone through 
its evolution and reached a state of equilibrium among its 
parts, thereafter continues in its extinct state, until by the 
still progressing general integration it is brought into the 
central mass. And though each such union of a secondary 
mass with the central mass, implying transformation of 
molar motion into molecular motion, causes partial dif- 
fusion of the total mass formed, and adds to the quantity of 
motion that has to be dispersed in the shape of light and 
heat ; yet it does but postpone the period at which the total 
mass must become completely integrated, and its excess of 
contained motion radiated into space. 



DISSOLUTION. 529 

* § 182. Here we come to tlic question raised at the closo 
of the last chapter — does Ev r olution as a whole, like Evolu- 
tion in detail, advance towards complete quiescence ? Is 
that motionless state called death, which ends Evolution in 
organic bodies, typical of the universal death in which Evo- 
lution at large must end ? And have we thus to contem- 
plate as the outcome of things, a boundless space holding 
here and there extinct suns, fated to remain for ever with- 
out further change. 

To so speculative an inquiry, none but a speculative 
answer is to be expected. Such answer as may be ventured, 
must be taken less as a positive answer than as a demurrer 
to the conclusion that the proximate result must be the 
ultimate result. If, pushing to its extreme the argument 
that Evolution must come to a close in complete equilibrium 
or rest, the reader suggests that for aught which appears to 
the contrary, the Universal Death thus implied will con- 
tinue indefinitely, it is legitimate to point out how, on 
carrying the argument still further, we are led to infer a 
subsequent Universal Life. Let us see what may bo 
assigned as grounds for inferring this. 

It has been already shown that all equilibration, so far 
as we can trace it, is relative. The dissipation of a body's 
motion by communication of it to surrounding matter, solid, 
liquid, gaseous, and ethereal, brings the body to a fixed 
position in relation to the matter that abstracts its motion. 
But all its other motions continue. Further, this motion, 
the disappearance of which causes relative equilibration, is 
not lost but simply transferred. "Whether it is directly 
transformed into insensible motion, as happens in the case 
of the Sun j or, whether, as in the sensible motions going 
on around us, it is directly transformed into smaller sensible 

* Though this chapter is new, this section, and the one following it, are 
not new. In the first edition they were included in the final section ot the 
foregoing chapter. While substantially the same as before, the argunie it 
has been in some places abbreviated and in other places enforced by addi- 
tional matter. 

24 



530 DISSOLUTION. 

motions, ancl these into still smaller, until they become in- 
sensible, matters not. In every instance the ultimate result 
is, that whatever motion of masses is lost, re-appears as 
molecular motion pervading space. Thus the questions we 
have to consider, are — Whether after the completion of all 
the relative equilibrations which bring Evolution to a close, 
there remain any further equilibrations to be effected ? — 
"Whether there are any other motions of masses that must 
eventually be transformed into molecular motion ? — And if 
there are such other motions, what must be the consequence 
when the molecular motion generated by their transforma- 
tion, is added to that which already exists ? 

To the first of these questions the answer is, that there do 
remain motions which are undiminished by all the relative 
equilibrations we have considered ; namely, the motions of 
translation possessed by those vast masses of matter called 
stars — remote suns that are probably, like our own, sur- 
rounded by circling groups of planets. The belief that the 
stars are fixed, has long since been abandoned : observation 
has proved many of them to have sensible proper motions. 
Moreover, it has been ascertained by measurement that in 
relation to the stars nearest to us, our own star travels at 
the rate of about half a million miles per day ; and if, as is 
admitted to be not improbable, our own star is moving in 
the same direction with adjacent stars, its absolute velocity 
may be, and most likely is, immensely greater than this. 
Now no such changes as those taking place within the Solar 
System, even when carried to the extent of integrating the 
whole of its matter into one mass, and diffusing all its 
relative motions in an insensible form through space, can 
affect these sidereal motions. Hence, there appears no alter- 
native but to infer that they must remain to be equilibrated 
by some subsequent process. 

The next question that arises is — To what law do sidereal 
motions conform ? And to this question Astronomy replies — 
the law of gravitation. The movements of binary stars havo 



DISSOLUTION. 531 

proved tliis. Tlie periodic times of sundry binary stars have 
been calculated on the assumption that their revolutions are 
determined by a force like that which regulates the revolu- 
tions of planets and satellites ; and the subsequent perfor- 
mances of their revolutions in the predicted periods, have 
verified the assumption. If, then, these remote bodies are 
centres of gravitation — if we infer that all other stars are 
centres of gravitation, as we may fairly do — and if we draw 
the unavoidable corollary, that the gravitative force which 
so conspicuously affects stars that are near one another, 
also affects remote stars ; we must conclude that all the 
members of our Sidereal System gravitate, individually and 
collectively. 

But if these widely-dispersed moving masses mutually 
gravitate, what must happen ? There appears but one ten- 
able answer. They cannot preserve their present arrange- 
ment : the irregular distribution of our Sidereal System 
being such as to render even a temporary moving equi- 
librium impossible. If the stars are centres of an attractive 
force that varies inversely as the square of the distance, 
there is no escape from the inference that the structure of 
our galaxy is undergoing change, and must continue to 
undergo change. 

Thus, in the absence of tenable alternatives, we are 
brought to the positions : — 1, that the stars are in motion ; 
■ — 2, that they move in conformity with the law of gravita- 
tion ; — 3, that, distributed as they are, they cannot move in 
conformity with the law of gravitation, without under- 
going re-arrangement. If now we ask the nature of this 
re-arrangement, we find ourselves obliged to infer a pro- 
gressive concentration. Stars at present dispersed, must 
become locally aggregated ; existing aggregations (except- 
ing, perhaps, the globular clusters) must grow more dense ; 
and aggregations must coalesce with one another. That 
integration has been progressing throughout past eras, we 
found to be indicated by the structure of the heavers, ia 



532 DISSOLUTION. 

general and in detail ; and of the extent to which it has in 
some places already gone, remarkable instances are furnished 
by the Magellanic clouds — two closely-packed agglomera- 
tions, not, indeed, of single stars only, but of single stars, 
of clusters regular and irregular, of nebulas, and of diffused 
nebulosity. That these have been formed by mutual gravi- 
tation of parts once widely scattered, there is evidence in 
the barrenness of the surrounding celestial spaces : the nu* 
becula minor, especially, being seated, as Humboldt says, 
in " a kind of starless desert." 

What must be the limit of such concentrations ? The 
mutual attraction of two stars, when it so far predominates 
over other attractions as to cause approximation, almost 
certainly ends in the formation of a binary star ; since the 
motions generated by other attractions prevent the two 
stars from moving in straight lines to their common centre 
of gravity. Between small clusters, too, having also certain 
proper motions as clusters, mutual attraction may lead, not 
to complete union, but to the formation of binary clusters. 
As the process continues, however, and the clusters become 
larger, they must move more directly towards each other : 
thus forming clusters of increasing density. While, there- 
fore, during the earlier stages of concentration, the pro- 
babilities are immense against the actual contact of these 
mutually-gravitating masses ; it is tolerably manifest that, 
as the concentration increases, collision must become 
probable, and ultimately certain. This is an inference not 
lacking the support of high authority. Sir John Herschel, 
treating of those numerous and variously - aggregated 
clusters of stars revealed by the telescope, and citing with 
apparent approval his father's opinion, that the more diffused 
and irregular of these, are ' ' globular clusters in a less ad- 
vanced state of condensation ;" subsequently remarks, that 
" among a crowd of solid bodies of whatever size, animated 
by independent and partially opposing impulses, motions op- 
posite to each other must produce collision, destruction of 



DISSOLUTION. 633 

Velocity, and subsidence or near approach towards the 
centre of preponderant attraction ; while those which con- 
spire, or which remain outstanding after such conflicts, 
must ultimately give rise to circulation of a permanent 
character." Now what is here alleged of these minor 
clusters, cannot be denied of larger clusters ; and thus the 
above-inferred process of concentration, appears certain to 
bring about an increasingly-frequent integration of masses. 
We have next to consider the consequences of the accom- 
panying loss of velocity. The sensible motion which disap- 
pears cannot be destroyed, but must be transformed into 
insensible motion. "What will be the effect of this insensible 
motion ? Already we have seen that were the Earth ar- 
rested, dissipation of its substance would result. And if 
so relatively small a momentum as that acquired by the 
Earth in falling to the Sun, would be equivalent to a mole- 
cular motion sufficient to reduce the Earth to gases of ex- 
treme rarity ; what must be the molecular motion generated 
by the mutually-arrested momenta of two stars, that have 
moved to their common centre of gravity through spaces 
immeasurably greater ? There seems no alternative but to 
conclude, that it would be great enough to reduce the 
matter of the stars to an almost inconceivable tenuity — a te- 
nuity like that which we ascribe to nebular matter. Such 
being the immediate effect, what would be the ulterior effect ? 
Sir John Herschel, in the passage above quoted, describing 
the collisions that must arise in a concentrating group of 
stars, adds that those stars " which remain outstanding 
after such conflicts must ultimately give rise to circula- 
tion of a permanent character." The problem, however, is 
here dealt with purely as a mechanical one : the assump- 
tion being that the mutually-arrested masses will con- 
tinue as masses — an assumption to which no objection ap- 
peared at the time when Sir John Herschel wrote this 
passage ; since the correlation of forces was not then re- 
cognized. But obliged as we now are to conclude, that 



531 DISSOLUTION. 

stars moving at the Irigh velocities acquired during concen- 
tration, will, by mutual arrest, be dissipated into gases, the 
problem becomes different ; and a different inference seems 
unavoidable. For the diffused matter produced by such con- 
flicts must form a resisting medium, occupying that central 
region of the cluster through which its members from time 
to time pass in describing their orbits — a resisting medium 
which they cannot move through without having their velo- 
cities diminished. Every additional collision, by augment- 
ing this resisting medium, and making the losses of velocity 
greater, must aid in preventing the establishment of that 
equilibrium which would else arise ; and so must conspire 
to produce more frequent collisions. And the nebulous 
matter thus formed, presently enveloping the whole cluster, 
must, by continuing to shorten the gyrations of the moving 
masses, entail an increasingly active integration and re- 
active disintegration of them; until they are all dissi- 
pated. "Whether this process completes itself inde- 
pendently in different parts of our Sidereal System; or 
whether it completes itself only by aggregating the whole 
matter of our Sidereal System ; or whether, as seems not 
unlikely, local integrations and disintegrations run their 
courses while the general integration is going on ; are ques- 
tions that need not be discussed. In any case the conclu- 
sion to be drawn is, that the integration must continue until 
the conditions which bring about disintegration are reached; 
and that there must then ensue a diffusion that undoes the 
preceding concentration. This, indeed, is the con- 
elusion which presents itself as a deduction from the persist- 
ence of force. If stars concentrating to a common centre oi 
gravity, eventually reach it, then the quantities of motior 
they have acquired must suffice to carry them away again tc 
those remote regions whence they started. And since, by thf 
conditions of the case, they cannot return to these remok 
regions in the shape of concrete masses, they must return 
in the shape of diffused masses. Action and reaction being 



DISSOLUTION. boo 

equal and opposite, the momentum producing dispersion, 
must be as great as the momentum acquired by aggregation; 
and being spread over the same quantity of matter, must 
cause an equivalent distribution through space, whatever be 
the form of the matter. One condition, however, 

essential to the literal fulfilment of this result, must be 
specified ; namely, that the quantity of molecular motion 
radiated into space by each star in the course of its forma- 
tion from diffused matter, shall either not escape from our 
Sidereal System or shall be compensated by an equal quan- 
tity of molecular motion radiated from other parts of space 
into our Sidereal System. In other words, if we set out 
with that amount of molecular motion implied by the exist- 
ence of the matter of our Sidereal System in a nebulous 
form ; then it follows from the persistence of force, that if 
this matter undergoes the re-distribution constituting Evo- 
lution, the quantity of molecular motion given out during 
the integration of each mass, plus the quantity of molecular 
motion given out during the integration of all the masses, 
must suffice again to reduce it to the same nebulous form. 

Here, indeed, we arrive at a barrier to our reasonings ; 
since we cannot know whether this condition is or is not 
fulfilled. If the ether which fills the interspaces of our 
Sidereal System has a limit somewhere beyond the outer- 
most stars, then it is inferrable that motion is not lost by 
radiation beyond this limit ; and if so, the original degree 
of diffusion may be resumed. Or supposing the ethereal 
medium to have no such limit, yet, on the hypothesis of an 
unlimited space, containing, at certain intervals, Sidereal 
Systems like our own, it may be that the quantity of mole- 
cular motion radiated into the region occupied by our 
Sidereal System, is equal to that which our Sidereal 
System radiates ; in which case the quantity of motion 
possessed by it, remaining undiminished, it may continue 
during unlimited time its alternate concentrations and dif- 
fusions. P>ut if, on the other hand, throughout boundless 



530 DISSOLUTION. 

space filled with ether, there exist no other Sidereal Sys- 
tems subject to like changes, or if such other Sidereal 
Systems exist at more than a certain average distance from 
one another ; then it seems an unavoidable conclusion that 
the quantity of motion possessed, must diminish by radia- 
tion; and that so, on each successive resumption of the 
nebulous form, the matter of our Sidereal System will 
occupy a less space ; until it reaches either a state in which 
its concentrations and diffusions are relatively small, or a 
state of complete aggregation and rest. Since, however, 
we have no evidence showing the existence or non-existence 
of Sidereal t Systems throughout remote space; and since, 
even had we such evidence, a legitimate conclusion could 
not be drawn from premises of which one element (un- 
limited space) is inconceivable ; we must be for ever without 
answer to this transcendent question. 

But confining ourselves to the proximate and not neces- 
sarily insoluble question, we find reason for thinking that 
after the completion of those various equilibrations which 
bring to a close all the forms of Evolution we have contem- 
plated, there must continue an equilibration of a far wider 
kind. When that integration everywhere in progress 
throughout our Solar System has reached its climax, there 
will remain to be effected the immeasureably greater inte- 
gration of our Solar System, with other such systems. 
There must then re-appear in molecular motion what is lost 
in the motion of masses ; and the inevitable transformation 
of this motion of masses into molecular motion, cannot take 
place without reducing the masses to a nebulous form. 

§ 183. Thus we are led to the conclusion that the 
entire process of things, as displayed in the aggregate of 
the visible Universe, is analogous to the entire process of 
things as displayed in the smallest aggregates. 

Motion as well as Matter being fixed in quantity, it would 
seem that the change in the distribution of Matter which 



DISSOLUTION. 537 

Motion effects, coming to a limit in whichever direction it 
is carried, the indestructible Motion thereupon necessitates 
a reverse distribution. Apparently, the universally-co- 
existent forces of attraction and repulsion, which, as we 
have seen, necessitate rhythm in all minor changes through- 
out the Universe, also necessitate rhythm in the totality of 
its changes — produce now an immeasureable period during 
which the attractive forces predominating, cause universal 
concentration, and then an immeasureable period during 
which the repulsive forces predominating, cause universal 
diffusion — alternate eras of Evolution and Dissolution. And 
thus there is suggested the conception of a past during 
which there have been successive Evolutions analogous to 
that which is now going on ; and a future during which 
successive other such Evolutions may go on — ever the same 
in principle but never the same in concrete result- 



CHAPTER XXIV. 

SUMMARY AND CONCLUSION. 

§ 184. At the close of a work like this, it is more tlmn 
usually needful to contemplate as a whole that which the 
successive chapters have presented in parts. A coherent 
knowledge implies something more than the establishment 
of connexions ; we must not rest after seeing how each 
minor group of truths falls into its place within some major 
group, and how all the major groups fit together. It is 
requisite that we should retire a space, and, looking at the 
entire structure from a distance at which details are lost to 
view, observe its general character. 

Something more than recapitulation — something more 
even than an organized re-statement, will come within the 
scope of the chapter. We shall find that in their ensemble 
the general truths reached exhibit, under certain aspects, a 
oneness not hitherto observed. 

There is, too, a special reason for noting how the various 
divisions and sub-divisions of the argument consolidate; 
namely, that the theory at large thereby obtains a final 
illustration. The reduction of the generalizations that have 
been set forth to a completely integrated state, exemplifies 
once more the process of Evolution, and strengthens still 
further the general fabric of conclusions. 

§ 185. Here, indeed, we find ourselves brought round 



SUMMARY AND CONCLUSION. 539 

tmexpectedly, and very significantly, to the truth with which 
we set out, and with which our re-survey must commence. 
For this integrated form of knowledge is the form which, 
apart from the doctrine of Evolution, we decided to be the 
highest form. 

When we inquired what constitutes Philosophy — when 
we compared men's various conceptions of Philosophy, so 
that, eliminating the elements in which they differed we 
might see in what they agreed ; we found in them all, the 
tacit implication that Philosophy is completely unified know- 
ledge. Apart from each particular scheme of unified know- 
ledge, and apart from the proposed methods by which 
unification is to be effected, we traced in every case the belief 
that unification is possible, and that the end of Philosophy 
is the achievement of it. 

Accepting this conclusion, we went on to consider the 
data with which Philosophy must set out. Fundamental 
propositions, or propositions not deducible from deeper 
ones, can be established only by showing the complete 
congruity of all the results reached through the assumption 
of them; and, premising that they were assumed till so 
established, we took as our data, those organized com- 
ponents of our intelligence without which there cannot 
go on the mental processes implied by philosophizing. 

From the specification of these we passed to certain 

-primary truths — "The Indestruct ibility of Matter," "The 
Continuity of Motion/' and " The Persistence of Force ; " 
of which the last is ultimate and the others derivative. 

, Having previously seen that our experiences of Matter and 
Motion are resolvable into experiences of Force ; we further 
saw the truths that Matter and Motion are unchangeable in 

I quantity, to be implications of the truth that Force is un- 

i changeable in quantity. This we discovered is the truth 
by derivation from which all other truths are to be proved. 
The first of the truths which presented itself to be so 

I proved, was " The Persistence of the Eolations among 



540 SUMMAEY AND CONCLUSION. 

Forces." This, wliicli is ordinarily called Uniformity of 
Law, we found to be a necessary implication of the fact that 
Force can neither arise out of nothing nor lapse into 
nothing. 

The deduction next drawn, was that forces which seem to 
be lost are transformed into their equivalents of other forces ; 
or, conversely, that forces which become manifest, do so by 
disappearance of pre-existing equivalent forces. Of these 
truths we found illustrations in the motions of the heavenly 
bodies, in the changes going on over the Earth's surface, 
and in all organic and super-organic actions. 

It turned out to be the same with the law that everything 
moves along the line of least resistence, or the line of 
greatest traction, or their resultant. Among movements of 
all orders, from those of stars down to those of nervous dis- 
charges and commercial currents, it was shown both that 
this is so, and that, given the Persistence of Force, it must 
be so. 

So, too, we saw it to be with " The Rhythm of Motion/' 
All motion alternates— be it the motion of planets in their 
orbits or ethereal molecules in their undulations — be it the 
cadences of speech or the rises and falls of prices ; and, as 
before, it became manifest that Force being persistent, this 
perpetual reversal of Motion between limits is inevitable. 

§ 186. These truths holding of all existences, were 
recognized as of the kind required to constitute what we 
distinguished as Philosophy. But, on considering them, we 
perceived that as they stand they do not form anything like 
a Philosophy ; and that a Philosophy cannot be formed by 
any number of such truths separately known. Each such 
truth expresses the general law of some one factor by which 
phenomena, as we habitually experience them, are pro- 
duced; or, at most, expresses the law of co-operation of 
some two factors. But knowing what are the elements of a 
process, is not knowing how these elements combine to 



SUMMARY AND CONCLUSION. 541 

effect it. That which atane can unify knowledge must be 
the law of co-operation of all the factors — a law expressing 
simultaneously the complex antecedents and the complex 
consequents which any phenomenon as a whole presents. 

A further inference was that Philosophy, as we under- 
stand it, must not unify separate concrete phenomena only ; 
and must not stop short with unifying separate classes of 
concrete phenomena; but must unify all concrete pheno- 
mena. If the law of operation of each factor holds true 
throughout the Cosmos ; so, too, must the law of their co- 
operation. And hence in comprehending the Cosmos as 
conforming to this law of co-operation, must consist that 
highest unification which Philosophy seeks. 

Descending from this abstract statement to a concrete 
one, we saw that the law sought must be the law of the 
continuous re-distribution of Matter and Motion. The 
changes everywhere going on, from those which are slowly 
altering the structure of our galaxy down to those which 
constitute a chemical decomposition, are changes in the 
relative positions of component parts; and everywhere 
necessarily imply that along with a new arrangement of 
Matter there has arisen a new arrangement of Motion. 
Hence we may be certain, a priori, that there must be a 
law of the concomitant re-distribution of Matter and 
Motion, which holds of every change ; and which, by thus 
unifying all changes, must be the basis of a Philosophy. 

In commencing our search for this universal law of re- 
distribution, we contemplated from another point of view 
the problem of Philosophy ; and saw that its solution could 
not but be of the nature indicated. It was shown that a 
Philosophy stands self-convicted of inadequacy, if it does 
not formulate the whole series of changes passed through 
by every existence in its passage from the imperceptible to 
the perceptible and again from the perceptible to the im- 
perceptible. If it begins its explanations with existences 
that already have concrete forms, or leaves off while they 



5-12 SUMMARY AND CONCLUSION. 

still retain concrete forms ; then, manifestly, they had pre- 
ceding histories, or will have sncceeding histories, or both, 
of which no account is given. And as such preceding and 
succeeding histories are subjects of possible knowledge, a 
Philosophy which says nothing about them, falls short of the 
required unification. Whence we saw it to follow that 
the formula sought, equally applicable to existences taken 
singly and in their totality, must be applicable to the whole 
history of each and to the whole history of all. 

By these considerations we were brought within view 
of the formula. For if it had to comprehend the entire 
progress from the imperceptible to the perceptible and 
from the perceptible to the imperceptible ; and if it was 
also to express the continuous re-distribution of Matter 
and Motion ; then, obviously, it could be no other than one 
defining the opposite processes of concentration and diffusion 
in terms of Matter and Motion. And if so, it must be a 
statement of the truth that the concentration of Matter 
implies the dissipation of Motion, and that, conversely, the 
absorption of Motion implies the diffusion of Matter. 

Such, in fact, we found to be the law of the entire cycle of 
changes passed through by every existence — loss of motion 
and consequent integration, eventually followed by gain of 
motion and consequent disintegration. And we saw that 
besides applying to the whole history of each existence, it 
applies to each detail of the history. Both processes are 
going on at every instant ; but always there is a differential 
result in favour of the first or the second. And every 
change, even though it be only a transposition of parts, 
inevitably advances the one process or the other. 

Evolution and Dissolution, as we name these opposite 
transformations, though thus truly defined in their most 
general characters, are but incompletely defined ; or rather, 
while the definition of Dissolution is sufficient, the definition 
of Evolution is extremely insufficient. Evolution is always 
an integration of Matter and dissipation of Motion ; but it 



6UJOARY AND CONCLUSION. 643 

is in most cases much more than this. The primary re- 
distribution of Matter and Motion is usually accompanied 
by secondary re-distributions. 

Distinguishing the different kinds of Evolution so pro- 
duced as simple and compound, we went on to consider 
under what conditions the secondary re-distributions which 
make Evolution compound, take place. We found that a 
concentrating aggregate which loses its contained motion 
rapidly, or integrates quickly, exhibits only simple Evolu- 
tion ; but in proportion as its largeness, or the peculiar con- 
stitution of its components, hinders the dissipation of its 
motion, its parts, while undergoing that primary re-distribu- 
tion which results in integration, undergo secondary re- 
distributions producing more or less complexity. 

§ 187. From this conception of Evolution and Dissolution 
as together making up the entire process through which 
things pass ; and from this conception of Evolution as 
dividing into simple and compound ; we went on to consider 
the law of Evolution, as exhibited among all orders of 
existences, in general and in detail. 

The integration of Matter and concomitant dissipation of 
Motion, was traced not in each whole only, but in the parts 
into which each whole divides. By the aggregate Solar 
System, as well as by each planet and satellite, progressive 
concentration has been, and is still being, exemplified. In 
each organism that general incorporation of dispersed 
materials which causes growth, is accompanied by local in- 
corporations, forming what we call organs. Every society 
while it displays the aggregative process by its increasing 
mass of population, displays it also by the rise of dense 
masses in special parts of its area. And in all cases, along 
with these direct integrations there go the indirect in- 
tegrations by which parts are made mutually dependent. 

From this primary re-distribution we were led on to 
consider the secondary re-distributions, by inquiring how 



544 SUMMARY AND CONCLUSION. 

there came to be a formation of parts during the formation 
of a whole. It turned out that there is habitually a passage 
from homogeneity to heterogeneity, along with the passage 
from diffusion to concentration. While the matter com- 
posing the Solar system has been assuming a denser form, it 
has changed from unity to variety of distribution. Sol- 
idification of the Earth has been accompanied by a progress 
from comparative uniformity to extreme multiformity. In 
the course of its advance from a germ to a mass of relatively 
great bulk, every plant and animal also advances from 
simplicity to complexity. The increase of a society in 
numbers and consolidation has for its concomitant an in- 
creased heterogeneity both of its political and its industrial 
organization. And the like holds of all super-organic pro- 
ducts — Language, Science, Art, and Literature. 

But we saw that these secondary re-distributions are not 
thus completely expressed. At the same time that the parts 
into which each whole is resolved become more unlike one 
another, they also become more sharply marked off. The 
result of the secondary re-distributions is therefore to change 
an indefinite homogeneity into a definite heterogeneity. 
This additional trait also we found to be traceable in evolving 
aggregates of all orders. Further consideration, however, 
made it apparent that the increasing definiteness which goes 
along with increasing heterogeneity, is not an independent 
trait; but that it results from the integration which pro- 
gresses in each of the differentiating parts, while it pro- 
gresses in the whole they form. 

Further, it was pointed out that in all evolutions, 
inorganic, organic, and super-organic, this change in the 
arrangement of Matter is accompanied by a parallel change 
in the arrangement of Motion : every increase in structural 
complexity involving a corresponding increase in func- 
tional complexity. It was shown that along with the 
integration of molecules into masses, there arises an integra- 
tion of molecular motion into the motion of masses ; and 



SUiTMAEY AND CONCLUSION. 545 

that as fast as there results variety in the sizes and forms of 
aggregates and their relations to incident forces, there also 
results variety in their movements. 

The transformation thus contemplated under separate 
aspects, being in itself but one transformation, it became 
needful to unite these separate aspects into a single concep- 
tion — to regard the primary and secondary re-distributions 
as simultaneously working their various effects. Every- 
where the change from a confused simplicity to a distinct 
complexity, in the distribution of both matter and motion, 
is incidental to the consolidation of the matter and the loss 
of its motion. Hence the re- distribution of the matter and 
of its retained motion, is from a diffused, uniform, and in- 
determinate arrangement, to a concentrated, multiform, and 
determinate arrangement. 

§ 188. We come now to one of the additions that may be 
made to the general argument while summing it up. Here 
is the fit occasion for observing a higher degree of unity in 
the foregoing inductions, than we observed while making 
them. 

The law of Evolution has been thus far contemplated as 
holding true of each order of existences, considered as a 
separate order. But the induction as so presented, falls 
short of that completeness which it gains when we con- 
template these several orders of existences as forming 
together one natural whole. While we think of Evolution 
as divided into astronomic, geologic, biologic, psychologic, 
sociologic, &c, it may seem to a certain extent a coincidence 
that the same law of metamorphosis holds throughout all its 
divisions. But when we recognize these divisions as mere 
conventional groupings, made to facilitate the arrangement 
and acquisition of knowledge — when we regard the different 
existences with which they severally deal as component 
parts of one Cosmos ; we see at once that there are not 
several kinds of Evolution having certain traits in common, 



546 SUMMARY AND CONCLUSION. 

but one Evolution going on everywhere after the same 
manner. We have repeatedly observed that while any 
whole is evolving, there is always going on an evolution of 
the parts into which it divides itself; but we have not 
observed that this equally holds of the totality of things, as 
made up of parts within parts from the greatest down to 
the smallest. We know that while a physically-cohering 
aggregate like the human body is getting larger and taking 
on its general shape, each of its organs is doing the same ; 
that while each organ is growing and becoming unlike 
others, there is going on a differentiation and integration 
of its component tissues and vessels ; and that even the 
components of these components are severally increasing 
and passing into more definitely heterogeneous structures. 
But we have not duly remarked that, setting out with the 
human body as a minute part, and ascending from it to 
greater parts, this simultaneity of transformation is equally 
manifest — that while each individual is developing, the 
society of which he is an insignificant unit is developing 
too ; that while the aggregate mass forming a society is 
becoming more definitely heterogeneous, so likewise is that 
total aggregate, the Earth, of which the society is an in- 
appreciable portion ; that while the Earth, which in bulk is 
not a millionth of the Solar System, progresses towards its 
concentrated and complex structure, the Solar System 
similarly progresses ; and that even its transformations 
are but those of a scarcely appreciable portion of our 
Sidereal System, which has at the same time been going 
through parallel changes. 

So understood, Evolution becomes not one in principle 
only, but one in fact. There are not many metamorphoses 
similarly carried on; but there is a single metamorphosis 
universally progressing, wherever the reverse metamorphosis 
has not set in. In any locality, great or small, throughout 
space, where the occupying matter acquires an appreciable 
individuality, or distinguishableness from other matter, thero 



SUMMARY AND CONCLUSION. 547 

Evolution goes on; or rather, the acquirement of this ap- 
preciable individuality is the commencement of Evolution. 
And this holds uniformly; regardless of the size of the aggre- 
gate, regardless of its inclusion in other aggregates, and 
regardless of the wider evolutions within which its own is 
comprehended. 

§ 189. After making them, we saw that the iuductions 
which, taken together, establish the law of Evolution, do 
not, so long as they remained inductions, form coherent 
parts of that whole rightly named Philosophy; nor does 
even the foregoing passage of these inductions from agree- 
ment into identity, suffice to produce the unity sought. 
For, as was pointed out at the time, to unify the truths 
thus reached with other truths, it is requisite to deduce 
them from the Persistence of Force. Our next step, there- 
fore, was to show why, Force being persistent, the trans- 
formation which Evolution shows us necessarily results. 
^ v The first conclusion arrived at was, that any finite 
homogeneous aggregate must inevitably lose its homo- 
geneity, through the unequal exposure of its parts to 
incident forces. It was pointed out that the production 
of diversities of structure by diverse forces, and forces 
acting under diverse conditions, has been illustrated in 
astronomic evolution ; and that a like connection of cause 
and effect is seen in the large and small modifications 
undergone by our globe. The early changes of crganic 
germs supplied further evidence that unlikenesses of struc- 
ture follow unlikenesses of relations to surrounding agencies 
— evidence enforced by the tendency of the differcntly- 
placed members of each species to diverge into varieties. 
And we found that the contrasts, political and industrial, 
which arise between the parts of societies, servo to illus- 
trate the same principle. The instability of the homo- 
geneous thus everywhere exemplified, wo also saw holds 
in each of the distinguishable parts into which auy uniform 



548 SUMMARl AND CONCLUSION. 

whole lapses ; and that so the less heterogeneous tends con* 
tinually to become more heterogeneous. 

A further step in the inquiry disclosed a secondary cause 
of increasing multiformity. Every differentiated part is 
not simply a seat of further differentiations, but also a parent 
of further differentiations ; since, in growing unlike other 
parts, it becomes a centre of unlike reactions on incident 
forces, and by so adding to the diversity of forces at work, 
adds to the diversity of effects produced. This multiplica- 
tion of effects proved to be similarly traceable throughout 
all Nature — in the actions and reactions that go on through- 
out the Solar System, in the never-ceasing geologic com- 
plications, in the involved symptoms produced in organisms 
by disturbing influences, in the many thoughts and feelings 
generated by single impressions, and in the ever-ramifying 
results of each new agency brought to bear on a society. 
To which was added the corollary, confirmed by abundant 
facts, that the multiplication of effects advances in a 
geometrical progression along with advancing heterogeneity. 

Completely to interpret the structural changes constitut- 
ing Evolution, there remained to assign a reason for that 
increasingly- distinct demarcation of parts, which accom- 
panies the production of differences among parts. This 
reason we discovered to be, the segregation of mixed units 
under the action of forces capable of moving them. We 
saw that when unlike incident forces have made the parts 
of an aggregate unlike in the natures of their component 
units, there necessarily arises a tendency to separation of 
the dissimilar units from one another, and to a clustering of 
those units which are similar. This cause of the local inte- 
grations that accompany local differentiations, turned out to 
be likewise exemplified by all kinds of Evolution — by the 
formation of celestial bodies, by the moulding of the Earth's 
crust, by organic modifications, by the establishment of 
mental distinctions, by the genesis of social divisions. 

At length, to the auery whether these processes have any 



SUMMARY AND CONCLUSION. 549 

limit, there came the answer that they must end in equili- 
brium. That continual division and subdivision of forces, 
which changes the uniform into the multiform and the 
multiform into the more multiform, is a process by which 
forces are perpetually dissipated ; and dissipation of them, 
continuing as long as there remain any forces unbalanced by 
opposing forces, must end in rest. It was shown that 
when, as happens in aggregates of various orders, many 
movements are going on together, the earlier dispersion 
of the smaller and more resisted movements, establishes 
moving equilibria of different kinds : forming transitional 
stages on the way to complete equilibrium. And further 
inquiry made it apparent that for the same reason, these 
moving equilibria have certain self-conserving powers ; 
shown in the neutralization of perturbations, and the adjust- 
ment to new conditions. This general principle of equili- 
bration, like the preceding general principles, was traced 
throughout all forms of Evolution — astronomic, geologic, 
biologic, mental and social. And our concluding inference 
was, that the penultimate stage of equilibration, in which the 
extremest multiformity and most complex moving equili- 
brium are established, must be one implying the highest con- 
ceivable state of humanity. 

But the fact which it here chiefly concerns us to remember, 
is that each of these laws of the re-distribution of Matter 
and Motion, was found to be a derivative law — a law de- 
ducible from the fundamental law. The Persistence of 
Force being granted, there follow as inevitable inferences 
" The Instability of the Homogeneous" and " The Multiplica- 
tion of Effects;" while "Segregation" and "Equilibration" 
also become corollaries. And thus discovering that the 
processes of change formulated under these titles are so 
many different aspects of one transformation, determined 
by an ultimate necessity, we arrive at a complete unification 
of .them — a synthesis in which Evolution in general and in 
detail becomes known as an implication of the law that 



550 ' SUMMARY AND CONCLUSION. 

transcends proof. Moreover, in becoming thus unified with 
one another, the complex truths of Evolution become simul- 
taneously unified with those simpler truths shown to have a 
like affiliation — the equivalence of transformed forces, the 
movement of every mass and molecule along its line of least 
resistance, and the limitation of its motion by rhythm. 
Which further unification brings us to a conception of 
the entire plexus of changes presented by each concrete 
phenomenon, and by the aggregate of concrete phenomena, 
as a manifestation of one fundamental fact — a fact shown 
alike in the total change and in all the separate changes 
composing it. 

§ 190. Finally we turned to contemplate, as exhibited 
throughout Nature, that process of Dissolution which forms 
the complement of Evolution ; and which inevitably, at 
some time or other, undoes what Evolution has done. 

Quickly following the arrest of Evolution in aggregates 
that are unstable, and following it at periods often long 
delayed but reached at last in the stable aggregates around 
us, we saw that even to the vast aggregate of which all 
these are parts — even to the Earth as a whole— Dissolution 
must eventually arrive. ISTay we even saw grounds for the 
belief that the far vaster masses dispersed at almost im- 
measurable intervals through space, will, at a time beyond 
the reach of finite imaginations, share the same fate ; and 
that so universal Evolution will be followed by universal 
Dissolution — a conclusion which, like those preceding it, 
we saw to be deducible from the Persistence of Force. 

It may be added that in so unifying the phenomena of 
Dissolution with those of Evolution, as being manifestations 
of the same ultimate law under opposite conditions, we also 
unify the phenomena presented by the existing . Universe 
with the like phenomena that have preceded them and will 
succeed them — so far, at least, as such unification is possible 
to our limited intelligences. For if, as we saw reason to 



SUMMARY AND CONCLUSION. 551 

think, there is an alternation of Evolution and Dissolution 
in the totality of things — if, as we are obliged to infer from 
the Persistence of Force,, the arrival at either limit of this 
vast rhythm brings about the conditions under which a 
counter-movement commences — if we are hence compelled 
to entertain the conception of Evolutions that have filled 
an immeasurable past and Evolutions that will fill an im- 
measurable future ; we can no longer contemplate the 
visible creation as having a definite beginning or end, or 
as being isolated. It becomes unified with all existence 
before and after ; and the Force which the Universe pre- 
sents, falls into the same category with its Space and Time, 
as admitting of no limitation in thought. 

§ 191. So rounding off the argument, we find its result 
brought into complete coalescence with the conclusion 
reached in Part I. ; where, independently of any inquiry like 
the foregoing, we dealt with the relation between the 
Kncwable and the Unknowable. 

It was there shown by analysis of both our religious and 
our scientific ideas, that while knowledge of the cause which 
produces effects on our consciousness is impossible, the 
existence of a cause for these effects is a datum of con- 
sciousness. We saw that the belief in a Power of which 
no limit in Time or Space can be conceived, is that funda- 
mental element in Religion which survives all its changes 
of form. We saw that all Philosophies avowedly or tacitly 
recognize this same ultimate truth : — that while the Rela- 
tivist rightly repudiates those definite assertions which 
the Absolutist makes respecting existence transcend- 
ing perception, he is yet at last compelled to unite with 
him in predicating existence transcending perception. And 
this inexpugnable consciousness in which Religion and 
Philosophy are at one with Common Sense, proved to be 
likewise that on which all exact Science is based. We 
found that subjective Science can give no account of those 



552 SUMMARY AN.D CONCLUSION. 

conditioned modes of being which constitute consciousness; 
without postulating unconditioned being. And* we found 
that objective Science can give no account of the world 
which we know as external, without regarding its changes 
of form as manifestations of something that continues con- 
stant under all forms. This is also the implication to which 
we are now led back by our completed synthesis. The 
recognition of a persistent Force, ever changing its mani- 
festations but unchanged in quantity throughout all past 
time and all future time, is that which we find alone makes 
possible each concrete interpretation, and at last unifies all 
concrete interpretations. Not, indeed, that this coincidence 
adds to the strength of the argument as a logical structure. 
Our synthesis has proceeded by taking for granted at every 
step this ultimate truth; and the ultimate truth cannot, 
therefore, be regarded as in any sense an outcome of the 
synthesis. Nevertheless, the coincidence yields a verifica- 
tion. For when treating of the data of Philosophy, it was 
pointed out that we cannot take even a first step without 
making assumptions ; and that the only course is to proceed 
with them as provisional, until they are proved true by the 
congruity of all the results reached. This congruity we 
here see to be perfect and all-embracing — holding through- 
out that entire structure of definite consciousness of rela- 
tions which we call Knowledge, and harmonizing with it 
that indefinite consciousness of existence transcending re- 
lations which forms the essence of Eeligion. 

§ 192. Towards some result of this order, inquiry, scien- 
tific, metaphysical, and theological, has been, and still is, 
manifestly advancing. The coalescence of polytheistic 
conceptions into the monotheistic conception, and the 
reduction of the monotheistic conception to a more and 
more general form in which personal superintendence be- 
comes merged in universal immanence, clearly shows this 
advance. It is equally shown in the fading away of old 



SUMMARY AND CONCLUSION. 553 

theories about " essences/' " potentialities/' "occult vir- 
tues/' &c; in the abandonment of such doctrines as those 
of " Platonic Ideas/' " Pre-established Harmonies," and the 
like ; and in the tendency towards the identification ot 
Being as present to us in consciousness, with Being as 
otherwise conditioned beyond consciousness. Still more 
conspicuous is it in the progress of Science ; which, from 
the beginning has been grouping isolated facts under laws, 
uniting special laws under more general laws, and so reach- 
ing on to laws of higher and higher generality; until the 
conception of universal laws has become familiar to it. 

Unification being thus the characteristic of developing 
thought of all kinds, and eventual arrival at unity being 
fairly inferable, there arises yet a further support to our 
conclusion. Since, unless there is some other and higher 
unity, the unity we have reached must be that towards which 
developing thought tends ; and that there is any other and 
higher unity is scarcely supposable. Having grouped the 
changes which all orders of existences display into induc- 
tions ; having merged these inductions into a single 
induction; having interpreted this induction deductively; 
having seen that the ultimate truth from which it is deduced 
is one transcending proof; it seems, to say the least, very 
improbable that there can be established a fundamentally 
different way of unifying that entire process of things 
which Philosophy has to interpret. That the foregoing 
accumulated verifications are all illusive, or that an opposing 
doctrine can show a greater accumulation of verifications, is 
not easy to conceive. 

Let no one suppose that any such implied degree of 
trustworthiness is alleged of the various minor propositions 
brought in illustration of the general argument. Such an 
assumption would be so manifestly absurd, that it seems 
scarcely needful to disclaim it. But the truth of the doctrine 
as a whole, is unaffected by errors in the details of its pre- 
i sentation. If it can be shown that the Persistence of Forco 
25 



554 SUMMARY AND CONCLUSION. 

is not a datum of consciousness; or if it can be shown 
that the several laws of force above specified are not corol- 
laries from it ; or if it can be shown that, given these laws, 
the re-distribution of Matter and Motion does not neces- 
sarily proceed as described ; then, indeed, it will be shown 
that the theory of Evolution has not the high warrant here 
claimed for it. But nothing short of this can shake the 
general conclusions arrived at. 

§ 193. If these conclusions be accepted — if it be agreed 
that the phenomena going on everywhere are parts of the 
general process of Evolution, save where they are parts of 
the reverse process of Dissolution ; then we may infer that 
all phenomena receive their complete interpretation, only 
when recognized as parts of these processes. Whence it 
follows that the limit towards which Knowledge is advanc- 
ing, must be reached when the formulas of these processes 
are so applied as to yield a total and specific interpretation 
of each phenomenon in its entirety, as well as of phenomena 
in general. 

The partially-unified knowledge distinguished as Science, 
does not yet include such total interpretations. Either, 
as in the more complex sciences, the progress is almost ex- 
clusively inductive ; or, as in the simpler sciences, the de- 
ductions are concerned with the component phenomena ; 
and at present there is scarcely a consciousness that the 
ultimate task is the deductive interpretation of phenomena 
in their state of composition. The Abstract Sciences, deal- 
ing with the forms under which phenomena are presented, 
and the Abstract -Concrete Sciences, dealing with the factors 
by which phenomena are produced, are, philosophically con- 
sidered, the handmaids of the Concrete Sciences, which 
deal with the produced phenomena as existing in all their 
natural complexity. The laws of the forms and the laws of 
the factors having been ascertained, there then comes the 
business of ascertaining the laws of the products, as deter- 



SUMMARY AND CONCLUSimSi 555 

mined by the inter-action of the co-opcrativ?. factors. Given 
the Persistence of Force, and given the various derivative 
laws of Force, and there has to be shown not only how 
the actual existences of the inorganic world necessarily 
exhibit the traits they do, but how there necessarily result 
the more numerous and involved traits exhibited by organic 
and super-organic existences — how an organism is evolved ? 
what is the genesis of human intelligence ? whence social 
progress arises ? 

It is evident that this development of Knowledge 
into an organized aggregate of direct and indirect deduc- 
tions from the Persistence of Force, can be achieved only 
in the remote future ; and, indeed, cannot be completely 
achieved even then. Scientific progress is progress in that 
equilibration of thought and things which we saw is going 
on, and must continue to go on ; but which cannot arrive 
at perfection in any finite period. Still, though Science can 
never be entirely reduced to this form ; and though only at 
a far distant time can it be brought nearly to this form ; 
much may even now be done in the way of approximation. 

Of course, what may now be done, can be done but very 
imperfectly by any single individual. No one can possess 
that encyclopedic information required for rightly organizing 
even the truths already established. Nevertheless as pro- 
gress is effected by increments — as all organization, begin- 
ning in faint and blurred outlines, is completed by successive 
modifications and additions ; advantage may accrue from an 
attempt, however rude, to reduce the facts now accumulated 
— or rather certain classes of them — to something like co- 
ordination. Such must be the plea for the several volumes 
which are to succeed this; dealing with the respective 
divisions of what we distinguished at the outset as Special 
Philosophy. 

§ 194. A few closing words must be said, concerning the 
general bearings of the doctrines that arc now to be further 



656 SUMMARY AND CONCLUSION. 

developed. Before proceeding to interpret the detailed 
phenomena of Life, and Mind, and Society, in terms of 
Matter, Motion, and Force, the reader must be reminded in 
what sense the interpretations are to "be accepted. 

It is true that their purely relative character has been re- 
peatedly insisted upon ; but the liability to misinterpretation 
is so great, that notwithstanding all evidence to the contrary, 
there will probably have arisen in not a few minds, the con- 
viction that the solutions which have been given, along with 
those to be derived from them, are essentially materialistic. 
Having, throughout life, constantly heard the charge of 
materialism made against those who ascribed the more in- 
volved phenomena to agencies like those which produce the 
simplest phenomena, most persons have acquired repugnance 
to such modes of interpretation ; and the universal appli- 
cation of them, even though it is premised that the solutions 
they give can be but relative, will probably rouse more or 
less of the habitual feeling. Such an attitude of mind, how- 
ever, is significant, not so much of a reverence for the 
Unknown Cause, as of an irreverence for those familiar 
forms in which the Unknown Cause is manifested to us. 
Men who have not risen above that vulgar conception which 
unites with Matter the contemptuous epithets "gross" 
and ' ' brute," may naturally feel dismay at the proposal to 
reduce the phenomena of Life, of Mind, and of Society, to a 
level with those which they think so degraded. But 
whoever remembers that the forms of existence which the 
uncultivated speak of with so much scorn, are shown by 
the man of science to be the more marvellous in their 
attributes the more they are investigated, and are also 
proved to be in their ultimate natures absolutely incompre- 
hensible — as absolutely incomprehensible as sensation, or 
the conscious something which perceives it — whoever clearly 
recognizes this truth, will see that the course proposed does 
not imply a degradation of the so-called higher, but an 
elevation of the so-called lower. Perceiving as he will, that 



SUMMARY AND CONCLUSION. OO/ 

tlie Materialist and Spiritualist controversy is a mere war of 
words, in which, the disputants are equally absurd — each 
thinking he understands that which it is impossible for any 
man to understand — he will perceive how utterly groundless 
is the fear referred to. Being fully convinced that whatever 
nomenclature is used, the ultimate mystery must remain the 
same, he will be as ready to formulate all phenomena in 
terms of Matter, Motion, and Force, as in any other terms ; 
and will rather indeed anticipate, that only in a doctrine 
which recognizes the Unknown Cause as co-extensive with 
all orders of phenomena, can there boa consistent Eeligion, 
or a consistent Philosophy. 

Though it is impossible to prevent misrepresentations, 
especially when the questions involved are of a kind that ex- 
cite so much animus, yet to guard againstthemas far as maybe, 
it will be well to make a succinct and emphatic re-statement 
of the Philosophico-Religious doctrine which pervades the 
foregoing pages. Over and over again it has been 

shown in various ways, that the deepest truths we can 
reach, are simply statements of the widest uniformities in 
our experience of the relations of Matter, Motion, and Force; 
and that Matter, Motion, and Force are but symbols of the 
Unknown Reality. A Power of which the nature remains 
for ever inconceivable, and to which no limits in Time or 
Space can be imagined, works in us certain effects. 
These effects have certain likenesses of kind, the most 
general of which we class together under the names of 
Matter, Motion, and Force ; and between these effects there 
are likenesses of connection, the most constant of which we 
class as laws of the highest certainty. Analysis reduces 
these several kinds of effect to one kind of effect ; and these 
several kinds of uniformity to one kind of uniformity. And 
the highest achievement of Science is the interpretation of 
all orders of phenomena, as differently-conditioned manifes- 
tations of this one kind of effect, under differently-condi- 
tioned modes of this one kind of uniformity. But when 



558 tJc^IMAKY AND CONCLUSION. 

Science has done this, it has done nothing more than sys- 
tematize onr experience; and has in no degree extended 
the limits of our experience. We can say no more than be- 
fore, whether the uniformities are as absolutely necessary, 
as they have become to our thought relatively necessary. 
The utmost possibility for us, is an interpretation of the 
process of things as it presents itself to our limited 
consciousness; but how this process is related to the 
actual process we are unable to conceive, much less to 
know. Similarly, it must be remembered that 

while the connection between the phenomenal order and 
the ontological order is for ever inscrutable ; so is the con- 
nection between the conditioned forms of being and the 
unconditioned form of being for ever inscrutable. The 
interpretation of all phenomena in terms of Matter, Motion, 
and Force, is nothing more than the reduction of our com- 
plex symbols of thought, to the simplest symbols; and 
when the equation has been brought to its lowest terms the 
symbols remain symbols still. Hence the reasonings con- 
tained in the foregoing pages, afford no support to either of 
the antagonist hypotheses respecting the ultimate nature of 
things. Their implications are no more materialistic than 
they are spiritualistic ; and no more spiritualistic than they 
are materialistic. Any argument which is apparently fur- 
nished to either hypothesis, is neutralized by as good an 
argument furnished to the other. The Materialist, seeing 
it to be a necessary deduction from the law of correlation, 
that what exists in consciousness under the form of feeling, 
is transformable into an equivalent of mechanical motion, 
and by consequence into equivalents of all the other forces 
which matter exhibits ; may consider it therefore demon- 
strated that the phenomena of consciousness are material 
phenomena. But the Spiritualist, setting out with the 
same data, may argue with equal cogency, that if the forces 
displayed by matter are cognizable only under the shape oi 
those equivalent amounts of consciousness which they pro- 



SUMMARY AND CONCLUSION. 559 

duce, it is to be inferred that these forces, when existing 
out of consciousness, are of the same intrinsic nature as 
when existing in consciousness ; and that so is justified the 
spiritualistic conception of the external world, as consisting 
of something essentially identical with what we call mind. 
Manifestly, the establishment of correlation and equivalence 
between the forces of the outer and the inner worlds, may 
be used to assimilate either to the other; according as wo 
set out with one or other term. But he who rightly inter- 
prets the doctrine contained in this work, will see that 
neither of these terms can be taken as ultimate. He will 
see that though the relation of subject and object renders 
necessary to us these antithetical conceptions of Spirit and 
flatter ; the one is no less than the other to be regarded as 
but a sign of the Unknown Reality which underlies both. 



TKE END* 



OPINIONS OF THE PRESS. 



Mr. Spencer's philosophical series is published by D. Apple ton 
d Co., Ne^\ York, in quarterly parts (80 to 100 pages each), by 
subscription, at two dollars a year. " First Principles" is issued 
in one volume, and four parts of Biology have appeared. "We 
subjoin some notices of his philosophy from American and English 
reviews : 

From the National Quarterly Eevieio (American). 
Comte thus founded social science, and opened a path for future discoverers; 
but he did not perceive, any more than previous inquirers, the fundamental law 
of human evolution. It was reserved for Herbert Spencer to discover this all- 
comprehensive law which is found to explain alike all the phenomena of man's 
history and all those of external nature. This sublime discovery, that the uni- 
verse is in a continuous process of evolution from the homogeneous to the hete- 
rogeneous, with which only Newton's law of gravitation is at all worthy to be 
compared, underlies not only physics, but also history. It reveals the law to 
which social changes conform. 

From tlie Orvristzan Examiner. 
Reverent and bold — reverent for truth, though not for the forms of truth, and 
not for much that we hold true — bold in the destruction of error, though with- 
out that joy in destruction which often claims the name of boldness; — these 
works are interesting in themselves and in their relation to the current thought 
of the time. They seem at first sight to form the turning point in the positive 
philosophy, but closer examination shows us that it is only a new and marked 
ptage in a regular growth. It is the positive philosophy reaching the higher 
relations of our being, and establishing what before it ignored because it had not 
reached, and by ignoring seemed to deny. This system formerly excluded the- 
ology and psychology. In the works of Herbert Spencer we have the rudiments 
of a positive theology and an immense step toward the perfection of the science 
of psychology. * * * Such is a brief and meagre sketch of a discussion 
which we would commend to be followed in detail by every mind interested in 
theological studies. Herbert Spencer comes in good faith from what has been 
10 long a hostile camp, bringing a flag of truce and presenting terms of agree- 
ment meant to be honorable to both parties : let us give him a candid hearing 



562 OPINIONS OF THE PEESS. 

* * * In conclusion, we would remark that the work of Herbert Spencer re 
ferred to (First Principles) is not mainly theological, but will present the lates'. 
and broadest generalizations of science, and we would commend to our readers 
this author, too little known among us, as at once one of the clearest of teachers 
and one of the wisest and most honorable of opponents. 

From tlie New Englander. 

Though we find here some unwarranted assumptions, as well as some grave 
omissions, yet this part (Laws of the Knowable) may be considered, upon the 
whole, as a fine specimen of scientific reasoning. Considerable space is devoted 
to the "Law of Evolution," the discovery of which is the author's chief claim to 
originality, and certainly evinces great power of generalization. To quote the 
abstract definition without a full statement of the inductions from which it is 
derived would convey no fair. impression of the breadth and strength of the 
thought which it epitomizes. Of Mr. Spencer's general characteristics as a wri- 
ter, we may observe that his style is marked by great purity, clearness, and 
force ; though it is somewhat diffuse, and the abstract nature of some of his top- 
ics occasionally renders his thought difficult of apprehension. His treatment of 
his subjects is generally thorough and sometimes exhaustive; his arguments are 
always ingenious if not always convincing; his illustrations are drawn from al- 
most every accessible field of human knowledge, and his method of "putting 
things" is such as to make the most of his materials. He is undoubtedly enti- 
tled to a high rank among the speculative and philosophic writers of the present 
day. * * * 

In Mr. Spencer we have the example of a positivist, who does not treat the 
subject of religion with supercilious neglect, and who illustrates by his own 
method of reasoning upon the highest objects of human thought, the value of 
those metaphysical studies which it is so much the fashion of his school to de- 
cry. For both these reasons the volume, which we now propose to examine, 
deserves the careful attention of the theologian who desires to know what one 
of the strongest thinkers of his school, commonly thought atheistic in its tenden- 
cies, can say in behalf of our ultimate religious ideas. For if we mistake not, in 
spite of the very negative character of his own results, he has furnished some 
strong arguments for the doctrine of a positive Christian theology. We shall be 
mistaken if we expect to find him carelessly passing these matters by (religious 
faith and theological science) as in all respects beyond knowledge and of no 
practical concern. On the contrary, he gives them profound attention, and 
arrives at conclusions in regard to them which even the Christian theologian 
must allow to contain a large measure of truth. While showing the unsearcliahlt 
nature of the ultimate facts on which religion depends, he demonstrates their 
real existence and their great importance. * * * In answering these ques- 
tions Mr. Spencer has, we think, arrived nearer to a true philosophy than either 
Hamilton or Mansel. At least he has indicated in a more satisfactory manner 
than they have done, the positive datum of consciousness that the unconditioned, 
though inscrutable, exists. It may be said that Mr. Spencer is not chargeable 
with excluding God from the universe, or denying all revelation of Him in His 
works, since he earnestly defends the truth that an inscrutable power is shown 
to exist. We certainly would not charge him with theoretical atheism, holding 
as he does this ultimate religious idea. 



OPINIONS OF THE PPESS. 563 

From tlie North American Review. 
The law of organic development announced in the early part of the \ resent 
century, by Goethe, Schelling, and Von Baer, and vaguely expressed in the for- 
mula, that " evolution is always from the homogeneous to the heterogeneous, and 
from the simple to the complex," has recently been extended by Herbert Spencer 
so as to include all phenomena whatsoever. He has shown that this law of evo- 
lution is the law of all evolution. Whether it be in the development of the earth 
or of life upon its surface, in the development of Society, of government, of man- 
ufactures, of commerce, of language, literature, science, and art, this same ad- 
vance from the simple to the complex, through successive differentiations, holda 
uniformly. The stupendous induction from all classes of phenomena by which Mr. 
Spencer proceeds to establish and illustrate his theorem cannot be given here. 

From the Christian Spectator (English). 
Mr. Spencer claims for his view that it is not only a religious position, but 
preeminently the religious position ; and we are most thoroughly disposed to 
agree with him, though we think he does not appreciate the force of his own 
argument, nor fully understand his own words. For let us now attempt to real- 
ize the meaning of this fact, of which Mr. Spencer and his compeers have put us 
in possession; let us endeavour to see whether its bearings are really favorable 
or adverse to religion. They are put forward indeed avowedly as adverse to any 
other religion than a mere reverential acquiescence in ignorance concerning all 
that truly exists ; but it appears to us that this supposed opposition to religion 
nrises from the fact that the doctrine itself is so profoundly, so intensely, so 
overwhelmingly religious, nay, so utterly and entirely Christian, that its true 
meaning could not be seen for very glory. Like Moses, when he came down 
from the Mount, this positive philosophy comes with a veil over its face, that its 
too divine radiance may be hidden for a time. This is Science that has been 
conversing with God, and brings in her hand His law written on tables of stone. 

From the Reader. 
To answer the question of the likelihood of the permanence of Mr. Mill's phi- 
losophic reign, * * * we should have to take account, among other things, 
of the differences from Mr. Mill already shown by the extraordinarily able and 
peculiarly original thinker whose name we have associated with Mr. Mill's at the 
head of this article. We may take occasion, at another time, to call attention to 
these speculations of Mr. Herbert Spencer, whose works in the mean time, and 
especially that new one whose title we have cited, we recommend to all those 
select readers whose appreciation of masterly exposition, and great reach and 
boldness of generalization, does not depend on their mere disposition to agree 
with the doctrines propounded. 

From the British Quarterly Review. 
Complete in itself, it is at the same time but a part of a whole, which, if it 
Bhould be constructed in proportion, will be ten times as great. For these First 
Principles are merely the foundation of a system of philosophy, bolder, more 
elaborate and comprehensive, perhaps, than any other which has been hitherto 
designed in England. * * * Widely as it will be seen we differ from the 
author on some point3, we very sincerely hope he may succeed in accomplishing 
the bold and magnificent project he has mapped out. 



564 OPINIONS OP THE PEESS. 

From the Comhill Magazine, 
Our " Surrey," superficial as it is, must include at least the men ion of a 
work so lofty in aim, and so remarkable in execution as the system of Philosophy 
which Mr. Herbert Spencer is issuing to subscribers. * * * In spite of all 
dissidence respecting the conclusions, the serious reader will applaud the pro. 
found earnestness and thoroughness with which these conclusions are advo- 
cated; the universal scientific knowledge brought to bear on them by way oi 
illustration, and the acute and subtle thinking displayed in every chapter. 

From the Parthenon. 
By these books he has wedged his way into fame in a manner distinctly ori 
ginal, and curiously marked. * * * There is a peculiar charm in this au- 
thor's style, in that it sacrifices to no common taste, while at the same time it 
makes the most abstnise questions intelligible. * * * The book, if it is to 
be noticed with the slightest degree of fairness, requires to be read and re-read, 
to be studied apart from itself and with itself. For whatever may be its ultimate 
fate — although as the ages go on it shall become but as the lispings of a little 
child, a little more educated than other lisping children of the same time — this 
is certain, that, as a book addressed to the present, it lifts the mind far above 
the ordinary range of thought, suggests new associations, arranges chaotic pic- 
tures, strikes often a broad hariuony, and even moves the heart by an intellec*. 
tual struggle as passionless as fate, but as irresistible as time. 

From the Critic. 
Mr. Spencer is the foremost mind of the only philosophical school in England 
which has arrived at a consistent scheme. * * * Beyond this school we en- 
counter an indolent chaotic eclecticism. Mr. Spencer claims the respect due to 
distinct and daring individuality ; others are echoes or slaves. Mr. Spencer may 
be a usurper, but he has the voice and gesture of a king. 

From the Medico- Chirurgical Review. 

Mr. Spencer is equally remarkable for his search after first principles ; for hia 

acute attempts to decompose mental phenomena into their primary elements ; 

and for his broad generalizations of mental activity, viewed in connection with 

nature, instinct, and all the analogies presented by life in its universal aspects. 

Translated from an able and elaborate article in the Revue des Deux Mondcs of 
Feb. 15, 1864. 
— The great work on philosophy, by Herbert Spencer, whom I would willingly 
Btyle the last of English metaphysicians. In the midst of universal indifference, 
Mr. Spencer remained steadily attached to his philosophical studies, displaying 
all that heroic courage and that rare independence indispensable to those who 
devote themselves to toilsome researches which at best only recompense the 
student with a few obscure and isolated suffrages. 

If Mr. Spencer, with his talent, his fertility of genius, and the almost encyclo 
pedic variety of knowledge of which his writings furnish the proof, had chosen 
to follow the beaten path, nothing would have been more easy than for him to 
secure all those honors of which English society is so prodigal to those who serve 
her as she wishes to be served. He preferred, however, with a noble and touch- 
)ng self-denial, to put up with poverty — and what is still more difficult, with ob 



OPINIONS OF TIIE TRESS. 565 

tcurity. But he deserves more than vain assurances of sympathy: we must not 
merely ndrnire his fidelity to profitless studies; his work itself merits the indi- 
vidual attention of all friends of philosophy. 

An impression prevails with many that Mr. Spencer belongs 
to the positive school of M. Augnste Comte. This is an entire 
misapprehension ; bat the position having been assumed by sev- 
eral of his reviewers, he repels the charge in the following letter, 
which appeared in the New Englander for January, 1864 : 

To the Editor qf the New Englander : 

Sir: — While recognizing the appreciative tone and general candour of the 
article in your last number, entitled "Herbert Spencer on Ultimate Religious 
Ideas," allow me to point out one error which pervades it. The writer correctly 
represents the leading positions of my argument, but he inadvertently conveys 
a wrong impression respecting my tendencies and sympathies. He says of me, 
"fna spirit of his philosophy is evidently that of the so-called positive method 
which has now many partial disciples, as well as many zealous adherents among 
the thinkers of England." Further on I am tacitly classed with "the English 
admirers and disciples of the great Positivist ;" and it is presently added that 
" in Mr. Spencer we have an example of a positivist, who does not treat the sub- 
ject of religion with supercilious neglect." Here and throughout, the implica- 
tion is that I am a follower of Comte. This is a mistake. That M. Comte has 
given a general exposition of the doctrine and method elaborated by science, 
and has applied to it a name which has obtained a certain currency, is true. 
But it is not true that the holders of this doctrine and followers of this method 
are disciples of M. Comte. Neither their modes of inquiry nor their views con- 
cerning human kuowledge in its nature and limits are appreciably different from 
what they were before. If they are Positivists it is in the sense that all men of 
science have been more or less consistently Positivists; and the applicability of 
M. Ccmte's title to them no more makes them his disciples than does its appli- 
cability to the men of science who lived and died before M. Comte wrote, make 
them his disciples. 

My own attitude toward M. Comte and his partial adherents has been all 
along that of antagonism. In an essay on the "Genesis of Science," published 
in 1854, aod republished with other essays in 1857, I have endeavoured to show 
that his theory of the logical dependence and historical development of the. 
sciences is untrue. I have still among my papers the memoranda of a second 
review (for which I failed to obtain a place), the purpose of which was to show 
the untenableness of his theory of intellectual progress. The only doctrine of 
importance in whiih I agree with him — the relativity of all knowledge — is one 
common to him and sundry other thinkers of earlier date ; and even this I hold 
in a different sense from that in which he held it. But on all points that are dis- 
tinctive of his philosophy, I differ from him. I deny his Hierarchy of the Sci- 
ences. I regard his division of intellectual progress into the three phases, theo 
logical, metaphysical, and positive, as superficial. I reject utterly his Religion 
of Humanity. And his ideal of society I hold in detestation. Some of his minor 
views I accept ; some of his incidental remarks seem to me to be profound, but 
from every thing which distinguishes Comteism as a system, I dissent entirely. 
The only influence on my own course of thought whichl can trace toM. Comte' a 
writings, is the influence that results from meeting with antagonistic opinions 
definitely expressed. 

Such bcincr my position, yon will, I think, see that by classing me as a Posi- 
tivist, and tacitly including mc among the English admirers and disciples of 
Comte, your reviewer unintentionally misrepresents me. I am quite ready to 
bear the odium attaching to opinions which 1 do hold; but I object to have added 
the odium attaching to opinions which I do not hold. If, by publishing this let- 
ter "_n your forthcoming number, you will allow me to set myself right with the 
American public on this matter, you will greatly oblige me. I am, Sir, your 
r-nedient servant, Heubert Si'SNCee. 



566 oriNioxs of the press. 

We lake the liberty of making an extract from a private lettei 

of Mr. Spencer, which contains some further observations in the 

same connection : 

" There appears to have got abroad in the United States a very erroneous 
impression respecting the influence of Comte's writings in England. I suppose 
that the currency obtained by the words 'Positivism' and ' Positivist,' is to 
blame for this. Comte having designated by the term Positive Philosophy all 
that body of definitely-established knowledge which men of science have been 
gradually organizing into a coherent body of doctrine, and having habitually 
placed this in opposition to the incoherent body of doctrine defended by theolo- 
gians, it has become the habit of the theological party to think of the antagonist 
scientific party under this title of Positivists applied to them by Comte. And 
thus, from the habit of calling them Positivists there has grown up the assump- 
tion that they call themselves Positivists, and that they are the disciples of 
Comte. The truth is that Comte and his doctrines receive here scarcely any at- 
tention. I know something of the scientific world in England, and I cannot 
name a single man of science who acknowledges himself a follower of Comte, or 
accepts the title of Positivist. Lest, however, there should be some such who 
were unknown to me, I have recently made inquiries into the matter. To Pro- 
fessor Tyndall I put the question whether Comte had exerted any appreciable 
influence on his own course of thought: and be replied, 'So far as I know, my 
own course of thought would have been exactly the same had Comte never ex- 
isted.' I then asked, ' Do you know any man of science whose views have been 
affected by Comte's writings?' and his answer was: 'His influence on scientific 
thought in England is absolutely nil* To the same questions Prof. Huxley re- 
turned, in other words, the same answers. Professors Huxley and Tyndall, 
being leaders in their respective departments, and being also men of general 
culture and philosophic insight, I think that joining their impressions with my 
own, I am justified in saying that the scientific world of England is wholly unin- 
fluenced by Comte. Such small influence as he has had here has been on some 
literary men and historians — men who were attracted by the grand achieve- 
ments of science, who were charmed by the plausible system of scientific gen- 
eralizations put forth by Comte, with the usual French regard for symmetry and 
disregard for fact, and who were, from their want of scientific training, unable 
to detect the essential fallaciousness of his system. Of these tbe most notable 
example was the late Mr. Buckle. Besides him, I can name but seven men who 
have been in any appreciable degree influenced by Comte; and of these, four, if 
fc< t five, are scarcely known to the public." 



The Works of Herbert Spencer. 



SYNTHETIC PHILOSOPHY. 
(Revised Edition.) 

FIRST PRINCIPLES, i vol $2 5 « 

PRINCIPLES OF BIOLOGY. 2 vols 5 00 

PRINCIPLES OF PSYCHOLOGY. 2 vols 5 co 

PRINCIPLES OF SOCIOLOGY. 1 vol 2 50 



DESCRIPTIVE SOCIOLOGY. 
(Large \to, with Tables.) 

No. 1.— ENGLISH 4 00 

No. 2.— ANCIENT AMERICANS 4 00 

No. 3.— NEGRITTO AND MALAYO-POLYNESIAN RACES . . . 4 00 

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MISCELLANEOUS. 

THE STUDY OF SOCIOLOGY 1 50 

EDUCATION, INTELLECTUAL, MORAL, AND PHYSICAL . . 1 25 

RECENT DISCUSSIONS IN SCIENCE, PHILOSOPHY, and MORALS, 2 00 

ILLUSTRATIONS OF UNIVERSAL PROGRESS 2 50 

ESSAYS, MORAL, POLITICAL, AND ESTHETIC .... 2 50 

SOCIAL STATICS 2 50 



New York: D. APPLET OX &> CO., Publisher*. 



Works of Herbert Spencer published by D. Appteton db Ct>. 
The Yhtfosophy of Herbert Silencer, 



FIRST PRINCIPLES; 

IN TWO PARTS; 

I THE UNKNOWABLE. II LAWS OF THE KNOWABLE. 

In one Volume. 518 pagres. 



a Mr. Spencer has earned an eminent and commanding position as a metaphysician 
te*1 his ability, earnestness, and profundity, are in none of his former volumes bo con- 
spicuous as in this. There is not a crude thought, a flippant fling, or an irreverent in- 
sinuation in this book, notwithstanding that it has something of the character of a 
daring and determined raid upon the old philosophies."— Chicago Journal. 

" This volume, treating of First Principles, like all Mr. Spencer's writings that have 
fallen under our observation, is distinguished for clearness, earnestness, candor, and 
that originality and fearlessness which ever mark the true philosophical spirit. His 
treatment of theological opinions is reverent and respectful, and his suggestions and 
arguments are such as to deserve, as they will compel, the earnest attention of all 
thoughtful students of first truths. Agreeing with Hamilton and Mansel in the gene- 
ral, on the unknowableness of the unconditioned, he nevertheless holds that their being 
Is in a form asserted by consciousness." — Christian Advocate. 

44 The literary world has seen but few such authors as Herbert Spencer. There have 
been metaphysical writers in the same exalted sphere who before him have attempted 
to reduce the laws of nature to a rational system. But in the highest realm of philo- 
sophical investigation he stands head and shoulders above his predecessors; not perhaps 
purely by force of superior intellect, but partly owing to the greater aid which the 
light of modern science has afforded him in the prosecution of his difficult task."— 
Boston Bulletin. 

"Mr. Spencer is achieving an enviable distinction by his contributions to the coun- 
try's literature ; his system of philosophy is destined to become a work of no small 
renown. Its appearance at this time is an evidence that our people are not all absorbed 
In war and its tragic events."— Ohio State Journal. 

" Mr. Spencer's works will undoubtedly receive in this country the attention they 
tterit. There is a broad liberality of tone throughout which will recommend them t« 
thinking, mquiring Americans. Whether, as is asserted, he has established a new syo- 
torn of philosophy, and if so, whether that system is better than all other systems, i* 
f«t to be decided; but that his bold and rigorous thought will add something valuable 
and permanent to human knowledge is undeniable." — Utica Herald. 

* Herbert Spencer is the foremost among living thinkers. If less erudite thai 
Hamilton, he is quite as original, and io mors comprehensive and catholic than Ma* 
m! "— Universa'/UD, 



W orkt of Herbert Spencer published by D. Ajyp eton i£ 6'*. 



ESSAYS: 

MORAL, POLITICAL, AKL ESTHBTIO. 

In one Volume. Larg-e 12mo. 386 pajrea. 

contents: 
I. The Philosophy of Style. 
U. Over-Legislation. 
HI. Morals of Trade. 
IV. Personal Beauty. 
V. Representative Government. 
VI. Prison-Ethics. 

VIL Railway Morals and Railway Policy. 
VIII. Gracefulness. 
IX. State Tamperings with Money and Banks. 
X. Reform ; the Dangers and the Safeguards. 



* These Essays form a new, and if we are not mistaken, a most popular installment 
•f the intellectual benefactions of that earnest writer and profound philosopher, Her- 
bert Spencer. There is a remarkable union of the speculative and practical in thes* 
papers. They are the fruit of studies alike economical and psychological ; they touch 
the problems of the passing hour, and they grasp truths of universal application ; they 
will be found as instructive to the general reader as interesting to political and social 
students." — Boston Transcript. 

* These Essays exhibit on a;most every page the powers of an independent human- 
itarian thinker. Mr. Spencer's ethics are rigid, his political views liberalistic, and his 
sim is the production of the highest earthly good."— Methodist Quarterly Review. 

"It abounds in the results of the sharp observation, the wide reach of knowledge, 
and the capacity to write clearly, forcibly, and pointedly, for which this writer Is pro- 
eminent The subjects are all such as concern us most intimately, and they are treated 
with admirable tact and knowledge. The first essay on the Philosophy of Style ii 
worth the cost of the volume ; it would be a deed of charity to print it by itself, an J 
send it to the editor of every newspaper in the land." — New Englander. 

■ Spencer is continually gaining ground with Americans ; he makes a book for ou; 
more serious moods. His remarks npon legislation, upon the nature of political insti- 
tutions and of their fundamental principles; his elucidation of those foundation truth* 
which control the policy of government, are of peculiar value to the American stu 
'lent"— Boston Post. 

"This volume will receive the applause of every serious reader lor the prorouud 
•*rne8tnes8 and thoroughness with which its views are elaborated, the infinite scientific 
taowledge brought to bear on every question, and the acute and subtle thinking <!!■ 
.Mayed in every chapter."— N. IF. Christian Advocate. 

" A mere Instructive, suggestive, and stimulating volnme hat not reached di u» a 
«j lima." - P> evidence Jourua*. 



Worts of Herbert Spencer published by D. AppCeton uB (Jo. 
Iii One Volume, 8yo., Cloth. Price $2.59. 



SOCIAL STATICS; 

OK, 

rHS CONDITIONS ESSENTIAL TO HUMAN HAPPINESS SPECfr 
TIED, AND THE FIEST OF THEM DEVELOPED. 

BY HEEBERT SPENCER. 



OPINIONS OF THE PRESS. 



Mr. Spencer, in his able and logical work on " Social Statics " . . . . Edin- 
burgh Review. 

It deserves very high praise for the ability, clearness, and force with which 
it is written, and which entitle it to the character, now so raie, of a really sub- 
stantial book.— North British Review. 

A remarkable work Mr. Spencer exhibits, and exhibits with re- 
markable force and clearness, many social equalizations of a just and right 
species which remain yet to be eifected. — British Quarterly Review. 

An inquiry conducted throughout with clearness, good temper, and strict 

logic We shall be mistaken if this book do not assist in organising that 

huge mass of thought which, for want of a more specific name, is now called 
Liberal Opinion. — Athenozum. 

It is the most eloquent, the most interesting, the most clearly-expressed and 
logically-reasoned work, with views the most original, that has appeared in the 
science of social polity.— Literary Gazette. 

The author of the present work is no ordinary thinker, and no ordinary wri- 
ter; and he gives us, in language that sparkles with beauties, and in reasoning 
at once novel and elaborate, precise and logical, a very comprehensive and 

complete exposition of the rights of men in society The book will 

mark an epoch in the literature of scientific morality. — Economist. 

AVe remember no work on ethics since that of Spinoza to be compared with 
It in the simplicity of its premises, and the logical rigour with which a com- 
plete system of scientific ethics is evolved from them A work at once 

so scientific in spirit and method, and so popular in execution, we shall look in 
vain for through libraries of political philosophy. — Leader. 

The careful reading we have given it has both afforded us intense pleasure, 
»nd rendered it a duty to express, with unusual emphasis, our opinion of ita 
fre»t abilit}' and excellence. — Nonconformist. 



New York: D. Appleton and Company. 



A thoughtful and valuable contribution to the best religious literature 
of the day. 



RELIGION AND SCIENCE. 



A Series of Sunday Lectures on the Relation of Natural and Revealed 
Religion, or the Truths revealed in Nature and Scripture. 

By JOSEPH LE CONTE, 

ri»OF£330B OF GEOLOGY AND NATURAL HISTORY IN THE UNIVERSITY OF CALIFORNIA. 

i2mo, cloth. Price, $150. 

OPINIONS OF THE Pit ESS. 

" This work is chiefly remarkable as a conscientious effort to reconcile 
the revelations of Science with those of Scripture, and will be very use- 
ful to teachers of the different Sunday-schools." — Detroit Union. 

"It will be seen, by this resutne of the topics, that Prof. Le Conte 
grapples with some of the gravest questions which agitate the thinking 
world. He treats of them all with dignity and fairness, and in a man- 
ner so clear, persuasive, and eloquent, as to engage the undivided at- 
tention of the reader. We commend the book cordially to the regard 
of all who are interested in whatever pertains to the discussion of these 
grave questions, and especially to those who desire to examine closely 
the strong foundations on which the Christian faith is reared." — Boston 
Journal. 

"A reverent student of Nature and religion is the best-qualified man 
to instruct others in their harmony. The author at first intended his 
work for a Bible-class, but, as it grew under his hands, it seemed well to 
give it form in a neat volume. The lectures are from a decidedly re- 
ligious stand-point, and as such present a new method of treatment." 
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" This volume is made up of lectures delivered to his pupils, and is 
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It is partly a treatise on natural theology and partly a defense of the 
Bible against the assaults of modern science. In the latter aspect the 
author's method is an eminently wise one. He accepts whatever sci- 
ence has proved, and he also accepts the divine origin of the Bible. 
Where the two seem to conflict he prefers to await the reconciliation, 
which is inevitable if both are true, rather than to waste time and words 
in inventing ingenious and doubtful theories to force them into seeming 
accord. Both as a theologian and a man of science, Prof. Le Conte's 
opinions are entitled to respectful attention, and there are few who will 
not recognize his book as a thoughtful and valuable contribution to the 
best religious literature of the day." — New York World. 

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This series of scientific books for boys, girls, and students oi every age, was de- 
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NOW EEADY: 

I.— LIGHT, 

A Series of Simple, Entertaining, and Inexpensive Experiments in the Phenomena of 
Light, for Students of every Age. 

By ALFRED M. MAYER and CHARLES BARXARD. 



II.— SOUND: 

A Series of Simple, Entertaining, and Inexpensive Experiments in the Phenomena of 
Sound, for the Use of Students of every Age. 

By ALFRED MARSHALL MAYER, 

Professor of Physics in the Stevens Institute of Technology ; Member of the National 
Academy of Sciences; of the American Philosophical Society, Philadelphia; of 
the American Academy of Arts and Sciences, Boston ; of the New York 
Academy of Sciences ; of the German Astronomical Society ; of 
the American Otological Society ; and Honorary Mem- 
ber of the New York Ophthalmological Society. 



In Active Pbepakation ; 

III. Vision and the Nature of Light. 
IY. Electricity and Magnetism. 
Y. Heat. 
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VIII. The Art of experimen ting with Cheap and Simple In- 
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LIGHT: 

A Series of Simple, Entertaining, and Inexpensive Experiments in the 
Phenomena of Light, for the Use of Students of Every Age, 



BY ALFRED M. MAYER and CHARLES BARNARD. 



Neat 12mo volume, fully illustrated. . . Cloth, price, $1.00. 



"Professor Mayer has invented a series of experiments in Light which are 
described by Mr. Barnard. Nothing is more necessary for sound-teacbing than 
experiments made by the pnpil, and this book, by considering the difficulty of 
costly apparatus, has rendered an important service to teacher and student alike. 
It deals with the sources of light, reflection, refraction, and decomposition of 
light. The experiments are extremely simple and well suited to young people." 
— Westminster Review. 

"This work describes, in simple language, a number of experiments illus- 
trating the principal properties of light, by means of a beam of sunlight admitted 
into a dark room, and various contrivances. The experiments are highly in- 
genious, and the young student can not fail to learn a great deal from the book. 
As an example of the effective experimental method employed, we may specially 
mention the device for illustrating the refraction of light. This book is specially 
designed ' to give to every teacher and scholar the knowledge of the art of experi- 
menting.' " — The Quarterly Journal of Science (Loudon). 

"A singularly excellent little hand-book for the use of teachers, parents, and 
children. The book is admirable both in design and execution. The experi- 
ments for which it provides are so simple that an intelligent boy or girl can 
easily make them, and so beautiful and interesting that even the youngest chib 
dren must enjoy the exhibition. The experiments here described are abundantly 
worth all that they cost in money and time in any family where there are boys 
and girls to be entertained.'"— New York Evening Post. 

" The experiments are capitally selected, and equally as well described. The 
book is conspicuously free from the multiplicity of confusing directions with 
which works of the kind too often abound. There is an abundance of excellent 
illustrations. "'—Xew York Scientific American. 

"The experiments are for the most part new, and have the merit of com- 
bining precision in the methods with extreme simplicity and elegance of design. 
. ue of the book is further enhanced by the numerous carefully-drawn cuts* 
which add greatly to its boa.aij."— American Journal of Science and Arts. 



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SOUND: 

A Series of Simple, Entertaining, and Inexpensive Experiments in the 
Phenomena of Sound, for the Use of Students of Every Age. 

BY ALFRED MARSHALL MAYER, 

Professor of Physics in the Stevens Institute of Technology; Member of the 
National Academy of Sciences, etc. 



Uniform with " LIGHT," first volume of the Series. 



Neat 12mo volume, fully illustrated. . . Cloth, plice, $1.00. 



"The object of the volume is to present the leading phenomena of Sound in a 
simple and entertaining manner, by the use of such materials as are almost every- 
where at hand, and with apparatus which any ingenious student can construct 
for himself. To present the elements of an abstruse subject in such a way as to 
make the exposition easily comprehensible by a mind not specially trained iu 
it, and at the same time correct and satisfactory from a scientific point of view, 
is one of the most difficult undertakings in the work of an instructor. Add to 
this the task of bringing the experimental illustration of a science like that of 
acoustics, which requires such refinement in the apparatus and its manipulation, 
within the resources of every one, and we have the difficulty very greatly in- 
creased. Professor Mayers well-known experimental skill has enabled him to 
accomplish the work in an admirable manner, and be has laid under obligation 
to him not only the student and the amateur experimenter, but the teacher, who 
will derive many valuable suggestions as to his own work from this little volume. 
The subject is arranged in a very clear and methodical manner, and treated in a 
vivacious and entertaining style. The experiments, many of which are novel, 
unite extreme simplicity with elegance of conception and scientific precision, 
and can not fail to interest and stimulate the minds of the students into whose 
hands the volume may fall. The illustrations, which are numerous, are ex- 
cellently done, and give the book a very attractive appearance."— American Jour- 
nal of Science and Arts. 

" It would really be difficult to exaggerate the merit, in the sense of consum- 
mate adaptation to its modest end, of this little treatise on 'Sound.' It teaches 
the youthful student how to make experiments for himself, without the help of 
a trained operator, and at very little expense. These hand-books of Professor 
Mayer should be in the hands of every teacher of the young."— New York Sun. 

" An admirably clear and interesting collection of experiments, described with 
just the right amount of abstract information and no more, and placed in pro- 
gressive order. The recent inventions of the phonograph fend microphone lend 
an extraordinary interest to this whole field of experiment, which makes Pro- 
fessor Mayer's manual especially opportune."— Boston Courier. 



D. AITLETON & CO., 549 & 551 Broadway, New York. 



32 



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